InformixDialect (hibernate-core JavaDocs)

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

All Implemented Interfaces:

ConversionContext

Direct Known Subclasses:

Informix10Dialect
```
public class InformixDialect
extends Dialect
```
Informix dialect. Seems to work with Informix Dynamic Server Version 7.31.UD3, Informix JDBC driver version 2.21JC3.

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, STANDARD_DEFAULT_BATCH_LOAD_SIZING_STRATEGY, STREAM_XFER_LOB_MERGE_STRATEGY

Constructor Summary

Constructors
Constructor and Description

InformixDialect()
Creates new <code>InformixDialect</code> instance.

Constructors
Constructor and Description
`InformixDialect()` Creates new <code>InformixDialect</code> instance.

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method and Description
`String`	`getAddColumnString()` The syntax used to add a column to a table (optional).
`String`	`getAddForeignKeyConstraintString(String constraintName, String foreignKeyDefinition)`
`String`	`getAddForeignKeyConstraintString(String constraintName, String[] foreignKey, String referencedTable, String[] primaryKey, boolean referencesPrimaryKey)` Informix constraint name must be at the end.
`String`	`getAddPrimaryKeyConstraintString(String constraintName)` Informix constraint name must be at the end.
`String`	`getCreateSequenceString(String sequenceName)` Typically dialects which support sequences can create a sequence with a single command.
`String`	`getCurrentTimestampSelectString()` Retrieve the command used to retrieve the current timestamp from the database.
`MultiTableBulkIdStrategy`	`getDefaultMultiTableBulkIdStrategy()`
`String`	`getDropSequenceString(String sequenceName)` Typically dialects which support sequences can drop a sequence with a single command.
`IdentityColumnSupport`	`getIdentityColumnSupport()` Get the appropriate `IdentityColumnSupport`
`LimitHandler`	`getLimitHandler()` Returns the delegate managing LIMIT clause.
`String`	`getLimitString(String querySelect, int offset, int limit)` Given a limit and an offset, apply the limit clause to the query.
`String`	`getQuerySequencesString()` Get the select command used retrieve the names of all sequences.
`String`	`getSelectSequenceNextValString(String sequenceName)` Generate the select expression fragment that will retrieve the next value of a sequence as part of another (typically DML) statement.
`String`	`getSequenceNextValString(String sequenceName)` Generate the appropriate select statement to to retrieve the next value of a sequence.
`UniqueDelegate`	`getUniqueDelegate()` Get the UniqueDelegate supported by this dialect
`ViolatedConstraintNameExtracter`	`getViolatedConstraintNameExtracter()`
`boolean`	`isCurrentTimestampSelectStringCallable()` Should the value returned by `Dialect.getCurrentTimestampSelectString()` be treated as callable.
`boolean`	`supportsCurrentTimestampSelection()` Does this dialect support a way to retrieve the database’s current timestamp value?
`boolean`	`supportsLimit()` Does this dialect support some form of limiting query results via a SQL clause?
`boolean`	`supportsLimitOffset()` Does this dialect’s LIMIT support (if any) additionally support specifying an offset?
`boolean`	`supportsPooledSequences()` Does this dialect support "pooled" sequences.
`boolean`	`supportsSequences()` Does this dialect support sequences?
`boolean`	`supportsVariableLimit()` Does this dialect support bind variables (i.e., prepared statement parameters) for its limit/offset?
`String`	`toBooleanValueString(boolean bool)` The SQL literal value to which this database maps boolean values.
`boolean`	`useMaxForLimit()` Does the <tt>LIMIT</tt> clause take a "maximum" row number instead of a total number of returned rows? <p/> This is easiest understood via an example.

Methods inherited from class org.hibernate.dialect.Dialect
addSqlHintOrComment, appendLockHint, appendLockHint, applyLocksToSql, areStringComparisonsCaseInsensitive, augmentRecognizedTableTypes, bindLimitParametersFirst, bindLimitParametersInReverseOrder, buildIdentifierHelper, buildSQLExceptionConversionDelegate, buildSQLExceptionConverter, canCreateCatalog, canCreateSchema, cast, cast, cast, closeQuote, contributeTypes, convertToFirstRowValue, createCaseFragment, createOuterJoinFragment, defaultScrollMode, doesReadCommittedCauseWritersToBlockReaders, doesRepeatableReadCauseReadersToBlockWriters, dropConstraints, escapeLiteral, forceLimitUsage, forceLobAsLastValue, forUpdateOfColumns, getAddColumnSuffixString, getAddUniqueConstraintString, getAlterTableString, getAuxiliaryDatabaseObjectExporter, getCallableStatementSupport, getCascadeConstraintsString, getCaseInsensitiveLike, getCastTypeName, getColumnAliasExtractor, getColumnComment, getCreateCatalogCommand, getCreateMultisetTableString, getCreateSchemaCommand, getCreateSequenceString, getCreateSequenceStrings, getCreateSequenceStrings, getCreateTableString, getCrossJoinSeparator, getCurrentSchemaCommand, getCurrentTimestampSQLFunctionName, getDefaultBatchLoadSizingStrategy, getDefaultProperties, getDialect, getDialect, getDropCatalogCommand, getDropForeignKeyString, getDropSchemaCommand, getDropSequenceStrings, getDropTableString, getForeignKeyExporter, getForUpdateNowaitString, getForUpdateNowaitString, getForUpdateSkipLockedString, getForUpdateSkipLockedString, getForUpdateString, getForUpdateString, getForUpdateString, getForUpdateString, getForUpdateString, getFunctions, getHibernateTypeName, getHibernateTypeName, getIndexExporter, getInExpressionCountLimit, getKeywords, getLimitString, getLobMergeStrategy, getLockingStrategy, getLowercaseFunction, getMaxAliasLength, getNameQualifierSupport, getNativeIdentifierGeneratorClass, getNativeIdentifierGeneratorStrategy, getNoColumnsInsertString, getNotExpression, getNullColumnString, getQueryHintString, getQueryHintString, getReadLockString, getReadLockString, getResultSet, getResultSet, getResultSet, getSchemaNameResolver, getSelectClauseNullString, getSelectGUIDString, getSequenceExporter, getSequenceInformationExtractor, getSqlTypeDescriptorOverride, getTableComment, getTableExporter, getTableTypeString, getTypeName, getTypeName, getUniqueKeyExporter, getWriteLockString, getWriteLockString, hasAlterTable, hasSelfReferentialForeignKeyBug, inlineLiteral, isJdbcLogWarningsEnabledByDefault, isLegacyLimitHandlerBehaviorEnabled, isLockTimeoutParameterized, isTypeNameRegistered, openQuote, prependComment, qualifyIndexName, quote, registerColumnType, registerColumnType, registerFunction, registerHibernateType, registerHibernateType, registerKeyword, registerResultSetOutParameter, registerResultSetOutParameter, remapSqlTypeDescriptor, renderOrderByElement, replaceResultVariableInOrderByClauseWithPosition, requiresCastingOfParametersInSelectClause, requiresParensForTupleDistinctCounts, supportsBindAsCallableArgument, supportsCascadeDelete, supportsCaseInsensitiveLike, supportsCircularCascadeDeleteConstraints, supportsColumnCheck, supportsCommentOn, supportsEmptyInList, supportsExistsInSelect, supportsExpectedLobUsagePattern, supportsIfExistsAfterAlterTable, supportsIfExistsAfterConstraintName, supportsIfExistsAfterTableName, supportsIfExistsBeforeConstraintName, supportsIfExistsBeforeTableName, supportsLobValueChangePropogation, supportsLockTimeouts, supportsNamedParameters, supportsNationalizedTypes, supportsNonQueryWithCTE, supportsNotNullUnique, supportsOuterJoinForUpdate, supportsParametersInInsertSelect, supportsPartitionBy, supportsResultSetPositionQueryMethodsOnForwardOnlyCursor, supportsRowValueConstructorSyntax, supportsRowValueConstructorSyntaxInInList, supportsSkipLocked, supportsSubqueryOnMutatingTable, supportsSubselectAsInPredicateLHS, supportsTableCheck, supportsTupleCounts, supportsTupleDistinctCounts, supportsTuplesInSubqueries, supportsUnboundedLobLocatorMaterialization, supportsUnionAll, supportsUnique, supportsUniqueConstraintInCreateAlterTable, supportsValuesList, toString, transformSelectString, useFollowOnLocking, useFollowOnLocking, useInputStreamToInsertBlob

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

- Constructor Detail
 - InformixDialect
```
public InformixDialect()
```
 Creates new <code>InformixDialect</code> instance. Sets up the JDBC / Informix type mappings.
- Method Detail
 - 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.
 - getAddForeignKeyConstraintString
```
public String getAddForeignKeyConstraintString(String constraintName,
 String[] foreignKey,
 String referencedTable,
 String[] primaryKey,
 boolean referencesPrimaryKey)
```
 Informix constraint name must be at the end. 
 The syntax used to add a foreign key constraint to a table.
 
 Overrides:
 
 getAddForeignKeyConstraintString in class Dialect
 
 Parameters:
 
 constraintName - The FK constraint name.
 
 foreignKey - The names of the columns comprising the FK
 
 referencedTable - The table referenced by the FK
 
 primaryKey - The explicit columns in the referencedTable referenced by this FK.
 
 referencesPrimaryKey - if false, constraint should be explicit about which column names the constraint refers to
 
 Returns:
 
 the "add FK" fragment
 - getAddForeignKeyConstraintString
```
public String getAddForeignKeyConstraintString(String constraintName,
 String foreignKeyDefinition)
```
 Overrides:
 
 getAddForeignKeyConstraintString in class Dialect
 - getAddPrimaryKeyConstraintString
```
public String getAddPrimaryKeyConstraintString(String constraintName)
```
 Informix constraint name must be at the end. 
 The syntax used to add a primary key constraint to a table.
 
 Overrides:
 
 getAddPrimaryKeyConstraintString in class Dialect
 
 Parameters:
 
 constraintName - The name of the PK constraint.
 
 Returns:
 
 The "add PK" fragment
 - getCreateSequenceString
```
public String getCreateSequenceString(String sequenceName)
```
 Description copied from class: Dialect
 
 Typically dialects which support sequences can create a sequence with a single command. This is convenience form of Dialect.getCreateSequenceStrings(java.lang.String) to help facilitate that. Dialects which support sequences and can create a sequence in a single command need only override this method. Dialects which support sequences but require multiple commands to create a sequence should instead override Dialect.getCreateSequenceStrings(java.lang.String).
 
 Overrides:
 
 getCreateSequenceString in class Dialect
 
 Parameters:
 
 sequenceName - The name of the sequence
 
 Returns:
 
 The sequence creation command
 - getDropSequenceString
```
public String getDropSequenceString(String sequenceName)
```
 Description copied from class: Dialect
 
 Typically dialects which support sequences can drop a sequence with a single command. This is convenience form of Dialect.getDropSequenceStrings(java.lang.String) to help facilitate that. Dialects which support sequences and can drop a sequence in a single command need only override this method. Dialects which support sequences but require multiple commands to drop a sequence should instead override Dialect.getDropSequenceStrings(java.lang.String).
 
 Overrides:
 
 getDropSequenceString in class Dialect
 
 Parameters:
 
 sequenceName - The name of the sequence
 
 Returns:
 
 The sequence drop commands
 - getSequenceNextValString
```
public String getSequenceNextValString(String sequenceName)
```
 Description copied from class: Dialect
 
 Generate the appropriate select statement to to retrieve the next value of a sequence. This should be a "stand alone" select statement.
 
 Overrides:
 
 getSequenceNextValString in class Dialect
 
 Parameters:
 
 sequenceName - the name of the sequence
 
 Returns:
 
 String The "nextval" select string.
 - getSelectSequenceNextValString
```
public String getSelectSequenceNextValString(String sequenceName)
```
 Description copied from class: Dialect
 
 Generate the select expression fragment that will retrieve the next value of a sequence as part of another (typically DML) statement. This differs from Dialect.getSequenceNextValString(String) in that this should return an expression usable within another statement.
 
 Overrides:
 
 getSelectSequenceNextValString in class Dialect
 
 Parameters:
 
 sequenceName - the name of the sequence
 
 Returns:
 
 The "nextval" fragment.
 - supportsSequences
```
public boolean supportsSequences()
```
 Description copied from class: Dialect
 
 Does this dialect support sequences?
 
 Overrides:
 
 supportsSequences in class Dialect
 
 Returns:
 
 True if sequences supported; false otherwise.
 - supportsPooledSequences
```
public boolean supportsPooledSequences()
```
 Description copied from class: Dialect
 
 Does this dialect support "pooled" sequences. Not aware of a better name for this. Essentially can we specify the initial and increment values?
 
 Overrides:
 
 supportsPooledSequences in class Dialect
 
 Returns:
 
 True if such "pooled" sequences are supported; false otherwise.
 
 See Also:
 
 Dialect.getCreateSequenceStrings(String, int, int), Dialect.getCreateSequenceString(String, int, int)
 - 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:
 
 SchemaUpdate
 - getLimitHandler
```
public LimitHandler getLimitHandler()
```
 Description copied from class: Dialect
 
 Returns the delegate managing LIMIT clause.
 
 Overrides:
 
 getLimitHandler in class Dialect
 
 Returns:
 
 LIMIT clause delegate.
 - supportsLimit
```
public boolean supportsLimit()
```
 Description copied from class: Dialect
 
 Does this dialect support some form of limiting query results via a SQL clause?
 
 Overrides:
 
 supportsLimit in class Dialect
 
 Returns:
 
 True if this dialect supports some form of LIMIT.
 - useMaxForLimit
```
public boolean useMaxForLimit()
```
 Description copied from class: Dialect
 
 Does the <tt>LIMIT</tt> clause take a "maximum" row number instead of a total number of returned rows? This is easiest understood via an example. Consider you have a table with 20 rows, but you only want to retrieve rows number 11 through 20. Generally, a limit with offset would say that the offset = 11 and the limit = 10 (we only want 10 rows at a time); this is specifying the total number of returned rows. Some dialects require that we instead specify offset = 11 and limit = 20, where 20 is the "last" row we want relative to offset (i.e. total number of rows = 20 - 11 = 9) So essentially, is limit relative from offset? Or is limit absolute?
 
 Overrides:
 
 useMaxForLimit in class Dialect
 
 Returns:
 
 True if limit is relative from offset; false otherwise.
 - supportsLimitOffset
```
public boolean supportsLimitOffset()
```
 Description copied from class: Dialect
 
 Does this dialect’s LIMIT support (if any) additionally support specifying an offset?
 
 Overrides:
 
 supportsLimitOffset in class Dialect
 
 Returns:
 
 True if the dialect supports an offset within the limit support.
 - getLimitString
```
public String getLimitString(String querySelect,
 int offset,
 int limit)
```
 Description copied from class: Dialect
 
 Given a limit and an offset, apply the limit clause to the query.
 
 Overrides:
 
 getLimitString in class Dialect
 
 Parameters:
 
 querySelect - The query to which to apply the limit.
 
 offset - The offset of the limit
 
 limit - The limit of the limit ;)
 
 Returns:
 
 The modified query statement with the limit applied.
 - supportsVariableLimit
```
public boolean supportsVariableLimit()
```
 Description copied from class: Dialect
 
 Does this dialect support bind variables (i.e., prepared statement parameters) for its limit/offset?
 
 Overrides:
 
 supportsVariableLimit in class Dialect
 
 Returns:
 
 True if bind variables can be used; false otherwise.
 - getViolatedConstraintNameExtracter
```
public ViolatedConstraintNameExtracter getViolatedConstraintNameExtracter()
```
 Specified by:
 
 getViolatedConstraintNameExtracter in interface ConversionContext
 
 Overrides:
 
 getViolatedConstraintNameExtracter in class Dialect
 - 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.
 - 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.
 - 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.
 - getDefaultMultiTableBulkIdStrategy
```
public MultiTableBulkIdStrategy getDefaultMultiTableBulkIdStrategy()
```
 Overrides:
 
 getDefaultMultiTableBulkIdStrategy in class Dialect
 - getUniqueDelegate
```
public UniqueDelegate getUniqueDelegate()
```
 Description copied from class: Dialect
 
 Get the UniqueDelegate supported by this dialect
 
 Overrides:
 
 getUniqueDelegate in class Dialect
 
 Returns:
 
 The UniqueDelegate
 - getIdentityColumnSupport
```
public IdentityColumnSupport getIdentityColumnSupport()
```
 Description copied from class: Dialect
 
 Get the appropriate IdentityColumnSupport
 
 Overrides:
 
 getIdentityColumnSupport in class Dialect
 
 Returns:
 
 the IdentityColumnSupport
 - toBooleanValueString
```
public String toBooleanValueString(boolean bool)
```
 Description copied from class: Dialect
 
 The SQL literal value to which this database maps boolean values.
 
 Overrides:
 
 toBooleanValueString in class Dialect
 
 Parameters:
 
 bool - The boolean value
 
 Returns:
 
 The appropriate SQL literal.

Class InformixDialect

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

InformixDialect

Method Detail

getAddColumnString

getAddForeignKeyConstraintString

getAddForeignKeyConstraintString

getAddPrimaryKeyConstraintString

getCreateSequenceString

getDropSequenceString

getSequenceNextValString

getSelectSequenceNextValString

supportsSequences

supportsPooledSequences

getQuerySequencesString

getLimitHandler

supportsLimit

useMaxForLimit

supportsLimitOffset

getLimitString

supportsVariableLimit

getViolatedConstraintNameExtracter

supportsCurrentTimestampSelection

isCurrentTimestampSelectStringCallable

getCurrentTimestampSelectString

getDefaultMultiTableBulkIdStrategy

getUniqueDelegate

getIdentityColumnSupport

toBooleanValueString