java.lang.Object
- org.hibernate.dialect.Dialect
- - org.hibernate.dialect.AbstractHANADialect

All Implemented Interfaces:

ConversionContext

Direct Known Subclasses:

HANAColumnStoreDialect, HANARowStoreDialect
```
public abstract class AbstractHANADialect
extends Dialect
```
An abstract base class for SAP HANA dialects.
For more information on interacting with the SAP HANA database, refer to the SAP HANA SQL and System Views Reference and the SAP HANA Client Interface Programming Reference.
Note: This dialect is configured to create foreign keys with on update cascade.

Nested Class Summary

Nested Classes
Modifier and Type Class Description

static class AbstractHANADialect.HANABlobType
- Nested classes/interfaces inherited from class org.hibernate.dialect.Dialect
  Dialect.SizeStrategy, Dialect.SizeStrategyImpl

Field Summary
- Fields inherited from class org.hibernate.dialect.Dialect
  CLOSED_QUOTE, DEFAULT_BATCH_SIZE, LEGACY_LOB_MERGE_STRATEGY, NEW_LOCATOR_LOB_MERGE_STRATEGY, NO_BATCH, QUOTE, sequenceExporter, STANDARD_DEFAULT_BATCH_LOAD_SIZING_STRATEGY, STREAM_XFER_LOB_MERGE_STRATEGY

Constructor Summary

Constructors
Constructor Description

AbstractHANADialect()

Method Summary

All Methods Instance Methods Abstract Methods Concrete Methods
Modifier and Type	Method	Description
`void`	`appendBooleanValueString(SqlAppender appender, boolean bool)`
`void`	`appendDatetimeFormat(SqlAppender appender, String format)`	Translate the given datetime format string from the pattern language defined by Java's `DateTimeFormatter` to whatever pattern language is understood by the native datetime formatting function for this database (often the `to_char()` function).
`IdentifierHelper`	`buildIdentifierHelper(IdentifierHelperBuilder builder, DatabaseMetaData dbMetaData)`	Build the IdentifierHelper indicated by this Dialect for handling identifier conversions.
`SQLExceptionConversionDelegate`	`buildSQLExceptionConversionDelegate()`	Build an instance of a `SQLExceptionConversionDelegate` for interpreting dialect-specific error or SQLState codes.
`String`	`castPattern(CastType from, CastType to)`	Obtain a pattern for the SQL equivalent to a `cast()` function call.
`void`	`contributeTypes(TypeContributions typeContributions, ServiceRegistry serviceRegistry)`	Allows the Dialect to contribute additional types
`ScrollMode`	`defaultScrollMode()`	Certain dialects support a subset of ScrollModes.
`boolean`	`dropConstraints()`	Do we need to drop constraints before dropping tables in this dialect?
`String`	`extractPattern(TemporalUnit unit)`	HANA has no extract() function, but we can emulate it using the appropriate named functions instead of extract().
`String`	`getAddColumnString()`	The syntax used to add a column to a table (optional).
`String`	`getAddColumnSuffixString()`	The syntax for the suffix used to add a column to a table (optional).
`JdbcType`	`getBlobTypeDescriptor()`
`CallableStatementSupport`	`getCallableStatementSupport()`
`String`	`getCascadeConstraintsString()`	The keyword that specifies that a `drop table` operation should be cascaded to its constraints, typically `" cascade"` where the leading space is required, or the empty string if there is no such keyword in this dialect.
`String`	`getColumnComment(String comment)`	Get the comment into a form supported for column definition.
`String`	`getCurrentSchemaCommand()`	Get the SQL command used to retrieve the current schema name.
`String`	`getCurrentTimestampSelectString()`	Retrieve the command used to retrieve the current timestamp from the database.
`int`	`getDefaultDecimalPrecision()`	This is the default precision for a generated column mapped to a `BigInteger` or `BigDecimal`.
`String`	`getForUpdateNowaitString()`	Retrieves the `FOR UPDATE NOWAIT` syntax specific to this dialect.
`String`	`getForUpdateNowaitString(String aliases)`	Get the `FOR UPDATE OF column_list NOWAIT` fragment appropriate for this dialect given the aliases of the columns to be write locked.
`String`	`getForUpdateString(String aliases)`	Get the `FOR UPDATE OF column_list` fragment appropriate for this dialect given the aliases of the columns to be write locked.
`String`	`getForUpdateString(String aliases, LockOptions lockOptions)`	Get the `FOR UPDATE OF column_list` fragment appropriate for this dialect given the aliases of the columns to be write locked.
`IdentityColumnSupport`	`getIdentityColumnSupport()`	Get the appropriate `IdentityColumnSupport`
`LimitHandler`	`getLimitHandler()`	Returns a `LimitHandler` that implements support for `Query.setMaxResults(int)` and `Query.setFirstResult(int)` for this dialect.
`int`	`getMaxAliasLength()`	What is the maximum length Hibernate can use for generated aliases?
`NameQualifierSupport`	`getNameQualifierSupport()`	By default interpret this based on DatabaseMetaData.
`NullOrdering`	`getNullOrdering()`	Returns the ordering of null.
`String`	`getQueryHintString(String query, List<String> hints)`	Apply a hint to the query.
`String`	`getQuerySequencesString()`	Get the select command used retrieve the names of all sequences.
`String`	`getReadLockString(int timeout)`	Get the string to append to SELECT statements to acquire READ locks for this dialect.
`String`	`getReadLockString(String aliases, int timeout)`	Get the string to append to SELECT statements to acquire READ locks for this dialect given the aliases of the columns to be read locked.
`String`	`getSelectGUIDString()`	Get the command used to select a GUID from the underlying database.
`SequenceInformationExtractor`	`getSequenceInformationExtractor()`	A source of `SequenceInformation`.
`SequenceSupport`	`getSequenceSupport()`
`SqlAstTranslatorFactory`	`getSqlAstTranslatorFactory()`	Return an SqlAstTranslatorFactory specific for the Dialect.
`String`	`getTableComment(String comment)`	Get the comment into a form supported for table definition.
`Exporter<Table>`	`getTableExporter()`
`String`	`getWriteLockString(int timeout)`	Get the string to append to SELECT statements to acquire WRITE locks for this dialect.
`String`	`getWriteLockString(String aliases, int timeout)`	Get the string to append to SELECT statements to acquire WRITE locks for this dialect given the aliases of the columns to be write locked.
`RowLockStrategy`	`getWriteRowLockStrategy()`	The row lock strategy to use for write locks.
`void`	`initializeFunctionRegistry(QueryEngine queryEngine)`	Initialize the given registry with any dialect-specific functions.
`boolean`	`isCurrentTimestampSelectStringCallable()`	Should the value returned by `Dialect.getCurrentTimestampSelectString()` be treated as callable.
`boolean`	`isUseUnicodeStringTypes()`
`protected void`	`registerHanaKeywords()`
`int`	`registerResultSetOutParameter(CallableStatement statement, int position)`	Registers a parameter (either OUT, or the new REF_CURSOR param type available in Java 8) capable of returning `ResultSet` by position.
`int`	`registerResultSetOutParameter(CallableStatement statement, String name)`	Registers a parameter (either OUT, or the new REF_CURSOR param type available in Java 8) capable of returning `ResultSet` by name.
`protected abstract boolean`	`supportsAsciiStringTypes()`
`boolean`	`supportsColumnCheck()`	HANA currently does not support check constraints.
`boolean`	`supportsCommentOn()`	Does this dialect/database support commenting on tables, columns, etc?
`boolean`	`supportsCurrentTimestampSelection()`	Does this dialect support a way to retrieve the database's current timestamp value?
`boolean`	`supportsExistsInSelect()`	Does the dialect support an exists statement in the select clause?
`boolean`	`supportsExpectedLobUsagePattern()`	Expected LOB usage pattern is such that I can perform an insert via prepared statement with a parameter binding for a LOB value without crazy casting to JDBC driver implementation-specific classes...
`boolean`	`supportsFractionalTimestampArithmetic()`	Whether the database supports adding a fractional interval to a timestamp e.g.
`boolean`	`supportsJdbcConnectionLobCreation(DatabaseMetaData databaseMetaData)`	Check whether the JDBC `Connection` supports creating LOBs via `Connection.createBlob()`, `Connection.createNClob()` or `Connection.createClob()`.
`boolean`	`supportsNoColumnsInsert()`	Check if the INSERT statement is allowed to contain no column.
`boolean`	`supportsNoWait()`	Does this dialect/database support NO_WAIT timeout.
`boolean`	`supportsOffsetInSubquery()`	Does this dialect support offset in subqueries? Ex: select * from Table1 where col1 in (select col1 from Table2 order by col2 limit 1 offset 1)
`boolean`	`supportsOrderByInSubquery()`	Does this dialect support the order by clause in subqueries? Ex: select * from Table1 where col1 in (select col1 from Table2 order by col2 limit 1)
`boolean`	`supportsPartitionBy()`	Does the underlying database support partition by
`boolean`	`supportsTableCheck()`	Does this dialect support table-level check constraints?
`boolean`	`supportsTupleDistinctCounts()`	Does this dialect support `count(distinct a,b)`?
`boolean`	`supportsUnboundedLobLocatorMaterialization()`	Is it supported to materialize a LOB locator outside the transaction in which it was created?
`boolean`	`supportsValuesListForInsert()`	Does this dialect/database support VALUES list (e.g.
`boolean`	`supportsWindowFunctions()`	Does this dialect support window functions like `row_number() over (..)`
`String`	`timestampaddPattern(TemporalUnit unit, TemporalType temporalType, IntervalType intervalType)`	Obtain a pattern for the SQL equivalent to a `timestampadd()` function call.
`String`	`timestampdiffPattern(TemporalUnit unit, TemporalType fromTemporalType, TemporalType toTemporalType)`	Obtain a pattern for the SQL equivalent to a `timestampdiff()` function call.
`protected abstract Boolean`	`useUnicodeStringTypesDefault()`

Methods inherited from class org.hibernate.dialect.Dialect
addSqlHintOrComment, appendBinaryLiteral, appendDateTimeLiteral, appendDateTimeLiteral, appendDateTimeLiteral, appendIntervalLiteral, appendLiteral, appendLockHint, applyLocksToSql, augmentRecognizedTableTypes, binaryToDecimalPrecision, canCreateCatalog, canCreateSchema, closeQuote, currentDate, currentLocalTime, currentLocalTimestamp, currentTime, currentTimestamp, currentTimestampWithTimeZone, doesReadCommittedCauseWritersToBlockReaders, doesRepeatableReadCauseReadersToBlockWriters, equivalentTypes, escapeComment, forceLobAsLastValue, getAddForeignKeyConstraintString, getAddForeignKeyConstraintString, getAddPrimaryKeyConstraintString, getAlterTableString, getAuxiliaryDatabaseObjectExporter, getBooleanCheckCondition, getCaseInsensitiveLike, getCastTypeName, getColumnAliasExtractor, getCreateCatalogCommand, getCreateMultisetTableString, getCreateSchemaCommand, getCreateTableString, getCreateTemporaryTableColumnAnnotation, getDefaultBatchLoadSizingStrategy, getDefaultLobLength, getDefaultProperties, getDefaultTimestampPrecision, getDoublePrecision, getDropCatalogCommand, getDropForeignKeyString, getDropSchemaCommand, getDropTableString, getEnumCheckCondition, getFallbackSqmMutationStrategy, getFloatPrecision, getForeignKeyExporter, getForUpdateSkipLockedString, getForUpdateSkipLockedString, getForUpdateString, getForUpdateString, getForUpdateString, getFractionalSecondPrecisionInNanos, getGroupBySelectItemReferenceStrategy, getHibernateTypeName, getHibernateTypeName, getHqlTranslator, getIndexExporter, getInExpressionCountLimit, getKeywords, getLobMergeStrategy, getLockingStrategy, getLockRowIdentifier, getLowercaseFunction, getNationalizationSupport, getNativeIdentifierGeneratorStrategy, getNoColumnsInsertString, getNullColumnString, getNullColumnString, getPreferredSqlTypeCodeForBoolean, getQueryHintString, getRawTypeName, getRawTypeName, getReadRowLockStrategy, getResultSet, getResultSet, getResultSet, getSchemaNameResolver, getSelectClauseNullString, getSequenceExporter, getSizeStrategy, getSqmTranslatorFactory, getTableTypeString, getTimeZoneSupport, getTypeName, getTypeName, getTypeName, getTypeName, getUniqueDelegate, getUniqueKeyExporter, getVersion, getViolatedConstraintNameExtractor, hasAlterTable, hasSelfReferentialForeignKeyBug, inlineLiteral, isAnsiNullOn, isEmptyStringTreatedAsNull, isJdbcLogWarningsEnabledByDefault, isLockTimeoutParameterized, isTypeNameRegistered, openQuote, prependComment, qualifyIndexName, quote, registerColumnType, registerColumnType, registerDefaultKeywords, registerHibernateType, registerHibernateType, registerKeyword, registerKeywords, requiresFloatCastingOfIntegerDivision, requiresParensForTupleCounts, requiresParensForTupleDistinctCounts, resolveSqlTypeDescriptor, resolveSqlTypeLength, supportsBindAsCallableArgument, supportsBitType, supportsCascadeDelete, supportsCaseInsensitiveLike, supportsCircularCascadeDeleteConstraints, supportsFetchClause, supportsIfExistsAfterAlterTable, supportsIfExistsAfterConstraintName, supportsIfExistsAfterTableName, supportsIfExistsBeforeConstraintName, supportsIfExistsBeforeTableName, supportsLobValueChangePropagation, supportsLockTimeouts, supportsNamedParameters, supportsNonQueryWithCTE, supportsNullPrecedence, supportsOrdinalSelectItemReference, supportsOuterJoinForUpdate, supportsParametersInInsertSelect, supportsResultSetPositionQueryMethodsOnForwardOnlyCursor, supportsSkipLocked, supportsSubqueryInSelect, supportsSubqueryOnMutatingTable, supportsSubselectAsInPredicateLHS, supportsTemporalLiteralOffset, supportsTemporaryTables, supportsTruncateWithCast, supportsTupleCounts, supportsUnionAll, supportsUnionInSubquery, supportsValuesList, supportsWait, toBooleanValueString, toString, transformSelectString, translateDurationField, translateExtractField, trimPattern, useFollowOnLocking, useInputStreamToInsertBlob

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

- Constructor Detail
  - AbstractHANADialect
```
public AbstractHANADialect()
```
- Method Detail
  - castPattern
```
public String castPattern(CastType from,
                          CastType to)
```
    Description copied from class: Dialect
    
    Obtain a pattern for the SQL equivalent to a cast() function call. The resulting pattern must contain ?1 and ?2 placeholders for the arguments.
    
    Overrides:
    
    castPattern in class Dialect
    
    Parameters:
    
    from - a CastType indicating the type of the value argument
    
    to - a CastType indicating the type the value argument is cast to
  - getDefaultDecimalPrecision
```
public int getDefaultDecimalPrecision()
```
    Description copied from class: Dialect
    
    This is the default precision for a generated column mapped to a BigInteger or BigDecimal.
    Usually returns the maximum precision of the database, except when there is no such maximum precision, or the maximum precision is very high.
    
    Overrides:
    
    getDefaultDecimalPrecision in class Dialect
    
    Returns:
    
    the default precision, in decimal digits
  - initializeFunctionRegistry
```
public void initializeFunctionRegistry(QueryEngine queryEngine)
```
    Description copied from class: Dialect
    Initialize the given registry with any dialect-specific functions. Support for certain SQL functions is required, and if the database does not support a required function, then the dialect must define a way to emulate it. These required functions include the functions defined by the JPA query language specification:
    
    avg(arg) - aggregate function
    count([distinct ]arg) - aggregate function
    max(arg) - aggregate function
    min(arg) - aggregate function
    sum(arg) - aggregate function
    
    coalesce(arg0, arg1, ...)
    nullif(arg0, arg1)
    
    lower(arg)
    upper(arg)
    length(arg)
    concat(arg0, arg1, ...)
    locate(pattern, string[, start])
    substring(string, start[, length])
    trim([[spec ][character ]from] string)
    
    abs(arg)
    mod(arg0, arg1)
    sqrt(arg)
    
    current date
    current time
    current timestamp
    Along with an additional set of functions defined by ANSI SQL:
    
    any(arg) - aggregate function
    every(arg) - aggregate function
    
    cast(arg as Type)
    extract(field from arg)
    
    ln(arg)
    exp(arg)
    power(arg0, arg1)
    floor(arg)
    ceiling(arg)
    
    position(pattern in string)
    substring(string from start[ for length])
    overlay(string placing replacement from start[ for length])
    And the following functions for working with java.time types:
    
    local date
    local time
    local datetime
    offset datetime
    instant
    And a number of additional "standard" functions:
    
    left(string, length)
    right(string, length)
    replace(string, pattern, replacement)
    pad(string with length spec[ character])
    
    sign(arg)
    sin(arg)
    cos(arg)
    tan(arg)
    asin(arg)
    acos(arg)
    atan(arg)
    atan2(arg0, arg1)
    round(arg0, arg1)
    least(arg0, arg1, ...)
    greatest(arg0, arg1, ...)
    
    format(datetime as pattern)
    str(arg) - synonym of cast(a as String)
    ifnull(arg0, arg1) - synonym of coalesce(a, b)
    Finally, the following functions are defined as abbreviations for extract(), and desugared by the parser:
    
    second(arg) - synonym of extract(second from a)
    minute(arg) - synonym of extract(minute from a)
    hour(arg) - synonym of extract(hour from a)
    day(arg) - synonym of extract(day from a)
    month(arg) - synonym of extract(month from a)
    year(arg) - synonym of extract(year from a)
    Overrides:
    
    initializeFunctionRegistry in class Dialect
  - getSqlAstTranslatorFactory
```
public SqlAstTranslatorFactory getSqlAstTranslatorFactory()
```
    Description copied from class: Dialect
    
    Return an SqlAstTranslatorFactory specific for the Dialect. Return null to use Hibernate's standard translator.
    
    Overrides:
    
    getSqlAstTranslatorFactory in class Dialect
    
    See Also:
    
    StandardSqlAstTranslatorFactory, JdbcEnvironment.getSqlAstTranslatorFactory()
  - extractPattern
```
public String extractPattern(TemporalUnit unit)
```
    HANA has no extract() function, but we can emulate it using the appropriate named functions instead of extract(). The supported fields are TemporalUnit.YEAR, TemporalUnit.MONTH TemporalUnit.DAY, TemporalUnit.HOUR, TemporalUnit.MINUTE, TemporalUnit.SECOND TemporalUnit.WEEK, TemporalUnit.DAY_OF_WEEK, TemporalUnit.DAY_OF_MONTH, TemporalUnit.DAY_OF_YEAR.
    
    Overrides:
    
    extractPattern in class Dialect
    
    Parameters:
    
    unit - the first argument
  - buildSQLExceptionConversionDelegate
```
public SQLExceptionConversionDelegate buildSQLExceptionConversionDelegate()
```
    Description copied from class: Dialect
    Build an instance of a SQLExceptionConversionDelegate for interpreting dialect-specific error or SQLState codes.
    If this method is overridden to return a non-null value, the default SQLExceptionConverter will use the returned SQLExceptionConversionDelegate in addition to the following standard delegates:
    
    a "static" delegate based on the JDBC 4 defined SQLException hierarchy;
    
    a delegate that interprets SQLState codes for either X/Open or SQL-2003 codes, depending on java.sql.DatabaseMetaData#getSQLStateType
    
    It is strongly recommended that specific Dialect implementations override this method, since interpretation of a SQL error is much more accurate when based on the vendor-specific ErrorCode rather than the SQLState.
    Specific Dialects may override to return whatever is most appropriate for that vendor.
    Overrides:
    
    buildSQLExceptionConversionDelegate in class Dialect
    
    Returns:
    
    The SQLExceptionConversionDelegate for this dialect
  - getWriteRowLockStrategy
```
public RowLockStrategy getWriteRowLockStrategy()
```
    Description copied from class: Dialect
    
    The row lock strategy to use for write locks.
    
    Overrides:
    
    getWriteRowLockStrategy in class Dialect
  - getAddColumnString
```
public String getAddColumnString()
```
    Description copied from class: Dialect
    
    The syntax used to add a column to a table (optional).
    
    Overrides:
    
    getAddColumnString in class Dialect
    
    Returns:
    
    The "add column" fragment.
  - getAddColumnSuffixString
```
public String getAddColumnSuffixString()
```
    Description copied from class: Dialect
    
    The syntax for the suffix used to add a column to a table (optional).
    
    Overrides:
    
    getAddColumnSuffixString in class Dialect
    
    Returns:
    
    The suffix "add column" fragment.
  - getCascadeConstraintsString
```
public String getCascadeConstraintsString()
```
    Description copied from class: Dialect
    
    The keyword that specifies that a drop table operation should be cascaded to its constraints, typically " cascade" where the leading space is required, or the empty string if there is no such keyword in this dialect.
    
    Overrides:
    
    getCascadeConstraintsString in class Dialect
    
    Returns:
    
    The cascade drop keyword, if any, with a leading space
  - getCurrentTimestampSelectString
```
public String getCurrentTimestampSelectString()
```
    Description copied from class: Dialect
    
    Retrieve the command used to retrieve the current timestamp from the database.
    
    Overrides:
    
    getCurrentTimestampSelectString in class Dialect
    
    Returns:
    
    The command.
  - getForUpdateString
```
public String getForUpdateString(String aliases)
```
    Description copied from class: Dialect
    
    Get the FOR UPDATE OF column_list fragment appropriate for this dialect given the aliases of the columns to be write locked.
    
    Overrides:
    
    getForUpdateString in class Dialect
    
    Parameters:
    
    aliases - The columns to be write locked.
    
    Returns:
    
    The appropriate FOR UPDATE OF column_list clause string.
  - getForUpdateString
```
public String getForUpdateString(String aliases,
                                 LockOptions lockOptions)
```
    Description copied from class: Dialect
    
    Get the FOR UPDATE OF column_list fragment appropriate for this dialect given the aliases of the columns to be write locked.
    
    Overrides:
    
    getForUpdateString in class Dialect
    
    Parameters:
    
    aliases - The columns to be write locked.
    
    lockOptions - the lock options to apply
    
    Returns:
    
    The appropriate FOR UPDATE OF column_list clause string.
  - getForUpdateNowaitString
```
public String getForUpdateNowaitString()
```
    Description copied from class: Dialect
    
    Retrieves the FOR UPDATE NOWAIT syntax specific to this dialect.
    
    Overrides:
    
    getForUpdateNowaitString in class Dialect
    
    Returns:
    
    The appropriate FOR UPDATE NOWAIT clause string.
  - getQuerySequencesString
```
public String getQuerySequencesString()
```
    Description copied from class: Dialect
    
    Get the select command used retrieve the names of all sequences.
    
    Overrides:
    
    getQuerySequencesString in class Dialect
    
    Returns:
    
    The select command; or null if sequences are not supported.
    
    See Also:
    
    org.hibernate.tool.hbm2ddl.SchemaUpdate
  - getSequenceInformationExtractor
```
public SequenceInformationExtractor getSequenceInformationExtractor()
```
    Description copied from class: Dialect
    
    A source of SequenceInformation.
    
    Overrides:
    
    getSequenceInformationExtractor in class Dialect
  - isCurrentTimestampSelectStringCallable
```
public boolean isCurrentTimestampSelectStringCallable()
```
    Description copied from class: Dialect
    
    Should the value returned by Dialect.getCurrentTimestampSelectString() be treated as callable. Typically this indicates that JDBC escape syntax is being used...
    
    Overrides:
    
    isCurrentTimestampSelectStringCallable in class Dialect
    
    Returns:
    
    True if the Dialect.getCurrentTimestampSelectString() return is callable; false otherwise.
  - registerHanaKeywords
```
protected void registerHanaKeywords()
```
  - defaultScrollMode
```
public ScrollMode defaultScrollMode()
```
    Description copied from class: Dialect
    
    Certain dialects support a subset of ScrollModes. Provide a default to be used by Criteria and Query.
    
    Overrides:
    
    defaultScrollMode in class Dialect
    
    Returns:
    
    ScrollMode
  - supportsColumnCheck
```
public boolean supportsColumnCheck()
```
    HANA currently does not support check constraints.
    
    Overrides:
    
    supportsColumnCheck in class Dialect
    
    Returns:
    
    True if column-level CHECK constraints are supported; false otherwise.
  - supportsCurrentTimestampSelection
```
public boolean supportsCurrentTimestampSelection()
```
    Description copied from class: Dialect
    
    Does this dialect support a way to retrieve the database's current timestamp value?
    
    Overrides:
    
    supportsCurrentTimestampSelection in class Dialect
    
    Returns:
    
    True if the current timestamp can be retrieved; false otherwise.
  - supportsExistsInSelect
```
public boolean supportsExistsInSelect()
```
    Description copied from class: Dialect
    
    Does the dialect support an exists statement in the select clause?
    
    Overrides:
    
    supportsExistsInSelect in class Dialect
    
    Returns:
    
    True if exists checks are allowed in the select clause; false otherwise.
  - supportsExpectedLobUsagePattern
```
public boolean supportsExpectedLobUsagePattern()
```
    Description copied from class: Dialect
    
    Expected LOB usage pattern is such that I can perform an insert via prepared statement with a parameter binding for a LOB value without crazy casting to JDBC driver implementation-specific classes...
    Part of the trickiness here is the fact that this is largely driver dependent. For example, Oracle (which is notoriously bad with LOB support in their drivers historically) actually does a pretty good job with LOB support as of the 10.2.x versions of their drivers...
    
    Overrides:
    
    supportsExpectedLobUsagePattern in class Dialect
    
    Returns:
    
    True if normal LOB usage patterns can be used with this driver; false if driver-specific hookiness needs to be applied.
  - supportsUnboundedLobLocatorMaterialization
```
public boolean supportsUnboundedLobLocatorMaterialization()
```
    Description copied from class: Dialect
    
    Is it supported to materialize a LOB locator outside the transaction in which it was created?
    Again, part of the trickiness here is the fact that this is largely driver dependent.
    NOTE: all database I have tested which Dialect.supportsExpectedLobUsagePattern() also support the ability to materialize a LOB outside the owning transaction...
    
    Overrides:
    
    supportsUnboundedLobLocatorMaterialization in class Dialect
    
    Returns:
    
    True if unbounded materialization is supported; false otherwise.
  - getSequenceSupport
```
public SequenceSupport getSequenceSupport()
```
    Overrides:
    
    getSequenceSupport in class Dialect
  - supportsTableCheck
```
public boolean supportsTableCheck()
```
    Description copied from class: Dialect
    
    Does this dialect support table-level check constraints?
    
    Overrides:
    
    supportsTableCheck in class Dialect
    
    Returns:
    
    True if table-level CHECK constraints are supported; false otherwise.
  - supportsTupleDistinctCounts
```
public boolean supportsTupleDistinctCounts()
```
    Description copied from class: Dialect
    
    Does this dialect support `count(distinct a,b)`?
    
    Overrides:
    
    supportsTupleDistinctCounts in class Dialect
    
    Returns:
    
    True if the database supports counting distinct tuples; false otherwise.
  - dropConstraints
```
public boolean dropConstraints()
```
    Description copied from class: Dialect
    
    Do we need to drop constraints before dropping tables in this dialect?
    
    Overrides:
    
    dropConstraints in class Dialect
    
    Returns:
    
    True if constraints must be dropped prior to dropping the table; false otherwise.
  - getMaxAliasLength
```
public int getMaxAliasLength()
```
    Description copied from class: Dialect
    
    What is the maximum length Hibernate can use for generated aliases?
    The maximum here should account for the fact that Hibernate often needs to append "uniqueing" information to the end of generated aliases. That "uniqueing" information will be added to the end of a identifier generated to the length specified here; so be sure to leave some room (generally speaking 5 positions will suffice).
    
    Overrides:
    
    getMaxAliasLength in class Dialect
    
    Returns:
    
    The maximum length.
  - getLimitHandler
```
public LimitHandler getLimitHandler()
```
    Description copied from class: Dialect
    
    Returns a LimitHandler that implements support for Query.setMaxResults(int) and Query.setFirstResult(int) for this dialect.
    
    Overrides:
    
    getLimitHandler in class Dialect
  - getSelectGUIDString
```
public String getSelectGUIDString()
```
    Description copied from class: Dialect
    
    Get the command used to select a GUID from the underlying database.
    Optional operation.
    
    Overrides:
    
    getSelectGUIDString in class Dialect
    
    Returns:
    
    The appropriate command.
  - getNameQualifierSupport
```
public NameQualifierSupport getNameQualifierSupport()
```
    Description copied from class: Dialect
    
    By default interpret this based on DatabaseMetaData.
    
    Overrides:
    
    getNameQualifierSupport in class Dialect
    
    Returns:
    
    The NameQualifierSupport.
  - buildIdentifierHelper
```
public IdentifierHelper buildIdentifierHelper(IdentifierHelperBuilder builder,
                                              DatabaseMetaData dbMetaData)
                                       throws SQLException
```
    Description copied from class: Dialect
    Build the IdentifierHelper indicated by this Dialect for handling identifier conversions. Returning null is allowed and indicates that Hibernate should fallback to building a "standard" helper. In the fallback path, any changes made to the IdentifierHelperBuilder during this call will still be incorporated into the built IdentifierHelper.
    The incoming builder will have the following set:
    
    IdentifierHelperBuilder.isGloballyQuoteIdentifiers()
    
    IdentifierHelperBuilder.getUnquotedCaseStrategy() - initialized to UPPER
    
    IdentifierHelperBuilder.getQuotedCaseStrategy() - initialized to MIXED
    
    By default Hibernate will do the following:
    
    Call IdentifierHelperBuilder.applyIdentifierCasing(DatabaseMetaData)
    Call IdentifierHelperBuilder.applyReservedWords(DatabaseMetaData)
    Applies AnsiSqlKeywords.sql2003() as reserved words
    
    Applies the {#link #sqlKeywords} collected here as reserved words
    
    Applies the Dialect's NameQualifierSupport, if it defines one
    Overrides:
    
    buildIdentifierHelper in class Dialect
    
    Parameters:
    
    builder - A semi-configured IdentifierHelper builder.
    
    dbMetaData - Access to the metadata returned from the driver if needed and if available. WARNING: may be null
    
    Returns:
    
    The IdentifierHelper instance to use, or null to indicate Hibernate should use its fallback path
    
    Throws:
    
    SQLException - Accessing the DatabaseMetaData can throw it. Just re-throw and Hibernate will handle.
    
    See Also:
    
    Dialect.getNameQualifierSupport()
  - getCurrentSchemaCommand
```
public String getCurrentSchemaCommand()
```
    Description copied from class: Dialect
    
    Get the SQL command used to retrieve the current schema name. Works in conjunction with Dialect.getSchemaNameResolver(), unless the return from there does not need this information. E.g., a custom impl might make use of the Java 1.7 addition of the Connection.getSchema() method
    
    Overrides:
    
    getCurrentSchemaCommand in class Dialect
    
    Returns:
    
    The current schema retrieval SQL
  - getForUpdateNowaitString
```
public String getForUpdateNowaitString(String aliases)
```
    Description copied from class: Dialect
    
    Get the FOR UPDATE OF column_list NOWAIT fragment appropriate for this dialect given the aliases of the columns to be write locked.
    
    Overrides:
    
    getForUpdateNowaitString in class Dialect
    
    Parameters:
    
    aliases - The columns to be write locked.
    
    Returns:
    
    The appropriate FOR UPDATE OF colunm_list NOWAIT clause string.
  - getReadLockString
```
public String getReadLockString(int timeout)
```
    Description copied from class: Dialect
    
    Get the string to append to SELECT statements to acquire READ locks for this dialect. Location of the returned string is treated the same as getForUpdateString.
    
    Overrides:
    
    getReadLockString in class Dialect
    
    Parameters:
    
    timeout - in milliseconds, -1 for indefinite wait and 0 for no wait.
    
    Returns:
    
    The appropriate LOCK clause string.
  - getReadLockString
```
public String getReadLockString(String aliases,
                                int timeout)
```
    Description copied from class: Dialect
    
    Get the string to append to SELECT statements to acquire READ locks for this dialect given the aliases of the columns to be read locked. Location of the returned string is treated the same as getForUpdateString.
    
    Overrides:
    
    getReadLockString in class Dialect
    
    Parameters:
    
    aliases - The columns to be read locked.
    
    timeout - in milliseconds, -1 for indefinite wait and 0 for no wait.
    
    Returns:
    
    The appropriate LOCK clause string.
  - getWriteLockString
```
public String getWriteLockString(int timeout)
```
    Description copied from class: Dialect
    
    Get the string to append to SELECT statements to acquire WRITE locks for this dialect. Location of the returned string is treated the same as getForUpdateString.
    
    Overrides:
    
    getWriteLockString in class Dialect
    
    Parameters:
    
    timeout - in milliseconds, -1 for indefinite wait and 0 for no wait.
    
    Returns:
    
    The appropriate LOCK clause string.
  - getWriteLockString
```
public String getWriteLockString(String aliases,
                                 int timeout)
```
    Description copied from class: Dialect
    
    Get the string to append to SELECT statements to acquire WRITE locks for this dialect given the aliases of the columns to be write locked. Location of the of the returned string is treated the same as getForUpdateString.
    
    Overrides:
    
    getWriteLockString in class Dialect
    
    Parameters:
    
    aliases - The columns to be read locked.
    
    timeout - in milliseconds, -1 for indefinite wait and 0 for no wait.
    
    Returns:
    
    The appropriate LOCK clause string.
  - getQueryHintString
```
public String getQueryHintString(String query,
                                 List<String> hints)
```
    Description copied from class: Dialect
    
    Apply a hint to the query. The entire query is provided, allowing the Dialect full control over the placement and syntax of the hint. By default, ignore the hint and simply return the query.
    
    Overrides:
    
    getQueryHintString in class Dialect
    
    Parameters:
    
    query - The query to which to apply the hint.
    
    hints - The hints to apply
    
    Returns:
    
    The modified SQL
  - getTableComment
```
public String getTableComment(String comment)
```
    Description copied from class: Dialect
    
    Get the comment into a form supported for table definition.
    
    Overrides:
    
    getTableComment in class Dialect
    
    Parameters:
    
    comment - The comment to apply
    
    Returns:
    
    The comment fragment
  - getColumnComment
```
public String getColumnComment(String comment)
```
    Description copied from class: Dialect
    
    Get the comment into a form supported for column definition.
    
    Overrides:
    
    getColumnComment in class Dialect
    
    Parameters:
    
    comment - The comment to apply
    
    Returns:
    
    The comment fragment
  - supportsCommentOn
```
public boolean supportsCommentOn()
```
    Description copied from class: Dialect
    
    Does this dialect/database support commenting on tables, columns, etc?
    
    Overrides:
    
    supportsCommentOn in class Dialect
    
    Returns:
    
    true if commenting is supported
  - supportsPartitionBy
```
public boolean supportsPartitionBy()
```
    Description copied from class: Dialect
    
    Does the underlying database support partition by
    
    Overrides:
    
    supportsPartitionBy in class Dialect
    
    Returns:
    
    boolean
  - contributeTypes
```
public void contributeTypes(TypeContributions typeContributions,
                            ServiceRegistry serviceRegistry)
```
    Description copied from class: Dialect
    
    Allows the Dialect to contribute additional types
    
    Overrides:
    
    contributeTypes in class Dialect
    
    Parameters:
    
    typeContributions - Callback to contribute the types
    
    serviceRegistry - The service registry
  - getBlobTypeDescriptor
```
public JdbcType getBlobTypeDescriptor()
```
  - appendBooleanValueString
```
public void appendBooleanValueString(SqlAppender appender,
                                     boolean bool)
```
    Overrides:
    
    appendBooleanValueString in class Dialect
  - getIdentityColumnSupport
```
public IdentityColumnSupport getIdentityColumnSupport()
```
    Description copied from class: Dialect
    
    Get the appropriate IdentityColumnSupport
    
    Overrides:
    
    getIdentityColumnSupport in class Dialect
    
    Returns:
    
    the IdentityColumnSupport
  - getTableExporter
```
public Exporter<Table> getTableExporter()
```
    Overrides:
    
    getTableExporter in class Dialect
  - getCallableStatementSupport
```
public CallableStatementSupport getCallableStatementSupport()
```
    Overrides:
    
    getCallableStatementSupport in class Dialect
  - registerResultSetOutParameter
```
public int registerResultSetOutParameter(CallableStatement statement,
                                         int position)
                                  throws SQLException
```
    Description copied from class: Dialect
    
    Registers a parameter (either OUT, or the new REF_CURSOR param type available in Java 8) capable of returning ResultSet *by position*. Pre-Java 8, registering such ResultSet-returning parameters varied greatly across database and drivers; hence its inclusion as part of the Dialect contract.
    
    Overrides:
    
    registerResultSetOutParameter in class Dialect
    
    Parameters:
    
    statement - The callable statement.
    
    position - The bind position at which to register the output param.
    
    Returns:
    
    The number of (contiguous) bind positions used.
    
    Throws:
    
    SQLException - Indicates problems registering the param.
  - registerResultSetOutParameter
```
public int registerResultSetOutParameter(CallableStatement statement,
                                         String name)
                                  throws SQLException
```
    Description copied from class: Dialect
    
    Registers a parameter (either OUT, or the new REF_CURSOR param type available in Java 8) capable of returning ResultSet *by name*. Pre-Java 8, registering such ResultSet-returning parameters varied greatly across database and drivers; hence its inclusion as part of the Dialect contract.
    
    Overrides:
    
    registerResultSetOutParameter in class Dialect
    
    Parameters:
    
    statement - The callable statement.
    
    name - The parameter name (for drivers which support named parameters).
    
    Returns:
    
    The number of (contiguous) bind positions used.
    
    Throws:
    
    SQLException - Indicates problems registering the param.
  - supportsOffsetInSubquery
```
public boolean supportsOffsetInSubquery()
```
    Description copied from class: Dialect
    
    Does this dialect support offset in subqueries? Ex: select * from Table1 where col1 in (select col1 from Table2 order by col2 limit 1 offset 1)
    
    Overrides:
    
    supportsOffsetInSubquery in class Dialect
    
    Returns:
    
    boolean
  - supportsWindowFunctions
```
public boolean supportsWindowFunctions()
```
    Description copied from class: Dialect
    
    Does this dialect support window functions like `row_number() over (..)`
    
    Overrides:
    
    supportsWindowFunctions in class Dialect
    
    Returns:
    
    true if the underlying database supports window functions, false otherwise. The default is false.
  - supportsNoWait
```
public boolean supportsNoWait()
```
    Description copied from class: Dialect
    
    Does this dialect/database support NO_WAIT timeout.
    
    Overrides:
    
    supportsNoWait in class Dialect
    
    Returns:
    
    true if NO_WAIT is supported
  - supportsJdbcConnectionLobCreation
```
public boolean supportsJdbcConnectionLobCreation(DatabaseMetaData databaseMetaData)
```
    Description copied from class: Dialect
    
    Check whether the JDBC Connection supports creating LOBs via Connection.createBlob(), Connection.createNClob() or Connection.createClob().
    
    Overrides:
    
    supportsJdbcConnectionLobCreation in class Dialect
    
    Parameters:
    
    databaseMetaData - JDBC DatabaseMetaData which can be used if LOB creation is supported only starting from a given Driver version
    
    Returns:
    
    true if LOBs can be created via the JDBC Connection.
  - supportsNoColumnsInsert
```
public boolean supportsNoColumnsInsert()
```
    Description copied from class: Dialect
    
    Check if the INSERT statement is allowed to contain no column.
    
    Overrides:
    
    supportsNoColumnsInsert in class Dialect
    
    Returns:
    
    if the Dialect supports no-column INSERT.
  - supportsValuesListForInsert
```
public boolean supportsValuesListForInsert()
```
    Description copied from class: Dialect
    
    Does this dialect/database support VALUES list (e.g. VALUES (1), (2), (3) ) for insert statements.
    
    Overrides:
    
    supportsValuesListForInsert in class Dialect
    
    Returns:
    
    true if VALUES list are supported for insert statements
  - supportsOrderByInSubquery
```
public boolean supportsOrderByInSubquery()
```
    Description copied from class: Dialect
    
    Does this dialect support the order by clause in subqueries? Ex: select * from Table1 where col1 in (select col1 from Table2 order by col2 limit 1)
    
    Overrides:
    
    supportsOrderByInSubquery in class Dialect
    
    Returns:
    
    boolean
  - getNullOrdering
```
public NullOrdering getNullOrdering()
```
    Description copied from class: Dialect
    
    Returns the ordering of null.
    
    Overrides:
    
    getNullOrdering in class Dialect
  - appendDatetimeFormat
```
public void appendDatetimeFormat(SqlAppender appender,
                                 String format)
```
    Description copied from class: Dialect
    Translate the given datetime format string from the pattern language defined by Java's DateTimeFormatter to whatever pattern language is understood by the native datetime formatting function for this database (often the to_char() function).
    Since it's never possible to translate all of the pattern letter sequences understood by DateTimeFormatter, only the following subset of pattern letters is accepted by Hibernate:
    
    G: era
    
    y: year of era
    
    Y: year of week-based year
    
    M: month of year
    
    w: week of week-based year (ISO week number)
    
    W: week of month
    
    E: day of week (name)
    
    e: day of week (number)
    
    d: day of month
    
    D: day of year
    
    a: AM/PM
    
    H: hour of day (24 hour time)
    
    h: hour of AM/PM (12 hour time)
    
    m: minutes
    
    s: seconds
    
    z,Z,x: timezone offset
    
    In addition, punctuation characters and single-quoted literal strings are accepted.
    Overrides:
    
    appendDatetimeFormat in class Dialect
  - supportsFractionalTimestampArithmetic
```
public boolean supportsFractionalTimestampArithmetic()
```
    Description copied from class: Dialect
    
    Whether the database supports adding a fractional interval to a timestamp e.g. `timestamp + 0.5 second`
    
    Overrides:
    
    supportsFractionalTimestampArithmetic in class Dialect
  - timestampaddPattern
```
public String timestampaddPattern(TemporalUnit unit,
                                  TemporalType temporalType,
                                  IntervalType intervalType)
```
    Description copied from class: Dialect
    
    Obtain a pattern for the SQL equivalent to a timestampadd() function call. The resulting pattern must contain ?1, ?2, and ?3 placeholders for the arguments.
    
    Overrides:
    
    timestampaddPattern in class Dialect
    
    Parameters:
    
    unit - The unit to add to the temporal
    
    temporalType - The type of the temporal
    
    intervalType - The type of interval to add or null if it's not a native interval
  - timestampdiffPattern
```
public String timestampdiffPattern(TemporalUnit unit,
                                   TemporalType fromTemporalType,
                                   TemporalType toTemporalType)
```
    Description copied from class: Dialect
    
    Obtain a pattern for the SQL equivalent to a timestampdiff() function call. The resulting pattern must contain ?1, ?2, and ?3 placeholders for the arguments.
    
    Overrides:
    
    timestampdiffPattern in class Dialect
    
    Parameters:
    
    unit - the first argument
    
    fromTemporalType - true if the first argument is a timestamp, false if a date
    
    toTemporalType - true if the second argument is
  - isUseUnicodeStringTypes
```
public boolean isUseUnicodeStringTypes()
```
  - supportsAsciiStringTypes
```
protected abstract boolean supportsAsciiStringTypes()
```
  - useUnicodeStringTypesDefault
```
protected abstract Boolean useUnicodeStringTypesDefault()
```

Class AbstractHANADialect

Nested Class Summary

Nested classes/interfaces inherited from class org.hibernate.dialect.Dialect

Field Summary

Fields inherited from class org.hibernate.dialect.Dialect

Constructor Summary

Method Summary

Methods inherited from class org.hibernate.dialect.Dialect

Methods inherited from class java.lang.Object

Constructor Detail

AbstractHANADialect

Method Detail

castPattern

getDefaultDecimalPrecision

initializeFunctionRegistry

getSqlAstTranslatorFactory

extractPattern

buildSQLExceptionConversionDelegate

getWriteRowLockStrategy

getAddColumnString

getAddColumnSuffixString

getCascadeConstraintsString

getCurrentTimestampSelectString

getForUpdateString

getForUpdateString

getForUpdateNowaitString

getQuerySequencesString

getSequenceInformationExtractor

isCurrentTimestampSelectStringCallable

registerHanaKeywords

defaultScrollMode

supportsColumnCheck

supportsCurrentTimestampSelection

supportsExistsInSelect

supportsExpectedLobUsagePattern

supportsUnboundedLobLocatorMaterialization

getSequenceSupport

supportsTableCheck

supportsTupleDistinctCounts

dropConstraints

getMaxAliasLength

getLimitHandler

getSelectGUIDString

getNameQualifierSupport

buildIdentifierHelper

getCurrentSchemaCommand

getForUpdateNowaitString

getReadLockString

getReadLockString

getWriteLockString

getWriteLockString

getQueryHintString

getTableComment

getColumnComment

supportsCommentOn

supportsPartitionBy

contributeTypes

getBlobTypeDescriptor

appendBooleanValueString

getIdentityColumnSupport

getTableExporter

getCallableStatementSupport

registerResultSetOutParameter

registerResultSetOutParameter

supportsOffsetInSubquery

supportsWindowFunctions

supportsNoWait

supportsJdbcConnectionLobCreation

supportsNoColumnsInsert

supportsValuesListForInsert

supportsOrderByInSubquery

getNullOrdering

appendDatetimeFormat

supportsFractionalTimestampArithmetic

timestampaddPattern

timestampdiffPattern

isUseUnicodeStringTypes

supportsAsciiStringTypes

useUnicodeStringTypesDefault