public class InformixDialect extends Dialect
Informix dialect.<br> <br> Seems to work with Informix Dynamic Server Version 7.31.UD3, Informix JDBC driver version 2.21JC3.
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 and Description |
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InformixDialect()
Creates new <code>InformixDialect</code> instance.
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Modifier and Type | Method and Description |
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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?
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boolean |
supportsLimitOffset()
Does this dialect’s LIMIT support (if any) additionally
support specifying an offset?
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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?
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String |
toBooleanValueString(boolean bool)
The SQL literal value to which this database maps boolean values.
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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.
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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, supportsNoWait, supportsOuterJoinForUpdate, supportsParametersInInsertSelect, supportsPartitionBy, supportsResultSetPositionQueryMethodsOnForwardOnlyCursor, supportsRowValueConstructorSyntax, supportsRowValueConstructorSyntaxInInList, supportsSkipLocked, supportsSubqueryOnMutatingTable, supportsSubselectAsInPredicateLHS, supportsTableCheck, supportsTupleCounts, supportsTupleDistinctCounts, supportsTuplesInSubqueries, supportsUnboundedLobLocatorMaterialization, supportsUnionAll, supportsUnique, supportsUniqueConstraintInCreateAlterTable, supportsValuesList, toString, transformSelectString, useFollowOnLocking, useFollowOnLocking, useInputStreamToInsertBlob
public InformixDialect()
Creates new <code>InformixDialect</code> instance. Sets up the JDBC / Informix type mappings.
public String getAddColumnString()
Dialect
The syntax used to add a column to a table (optional).
getAddColumnString
in class Dialect
public String getAddForeignKeyConstraintString(String constraintName, String[] foreignKey, String referencedTable, String[] primaryKey, boolean referencesPrimaryKey)
Informix constraint name must be at the end. <p/>
The syntax used to add a foreign key constraint to a table.
getAddForeignKeyConstraintString
in class Dialect
constraintName
- The FK constraint name.foreignKey
- The names of the columns comprising the FKreferencedTable
- The table referenced by the FKprimaryKey
- The explicit columns in the referencedTable referenced
by this FK.referencesPrimaryKey
- if false, constraint should be
explicit about which column names the constraint refers topublic String getAddForeignKeyConstraintString(String constraintName, String foreignKeyDefinition)
getAddForeignKeyConstraintString
in class Dialect
public String getAddPrimaryKeyConstraintString(String constraintName)
Informix constraint name must be at the end. <p/>
The syntax used to add a primary key constraint to a table.
getAddPrimaryKeyConstraintString
in class Dialect
constraintName
- The name of the PK constraint.public String getCreateSequenceString(String sequenceName)
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.
<p/>
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)
.
getCreateSequenceString
in class Dialect
sequenceName
- The name of the sequencepublic String getDropSequenceString(String sequenceName)
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.
<p/>
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)
.
getDropSequenceString
in class Dialect
sequenceName
- The name of the sequencepublic String getSequenceNextValString(String sequenceName)
Dialect
Generate the appropriate select statement to to retrieve the next value of a sequence. <p/> This should be a "stand alone" select statement.
getSequenceNextValString
in class Dialect
sequenceName
- the name of the sequencepublic String getSelectSequenceNextValString(String sequenceName)
Dialect
Generate the select expression fragment that will retrieve the next
value of a sequence as part of another (typically DML) statement.
<p/>
This differs from Dialect.getSequenceNextValString(String)
in that this
should return an expression usable within another statement.
getSelectSequenceNextValString
in class Dialect
sequenceName
- the name of the sequencepublic boolean supportsSequences()
Dialect
Does this dialect support sequences?
supportsSequences
in class Dialect
public boolean supportsPooledSequences()
Dialect
Does this dialect support "pooled" sequences. Not aware of a better name for this. Essentially can we specify the initial and increment values?
supportsPooledSequences
in class Dialect
Dialect.getCreateSequenceStrings(String, int, int)
,
Dialect.getCreateSequenceString(String, int, int)
public String getQuerySequencesString()
Dialect
Get the select command used retrieve the names of all sequences.
getQuerySequencesString
in class Dialect
SchemaUpdate
public LimitHandler getLimitHandler()
Dialect
Returns the delegate managing LIMIT clause.
getLimitHandler
in class Dialect
public boolean supportsLimit()
Dialect
Does this dialect support some form of limiting query results via a SQL clause?
supportsLimit
in class Dialect
public boolean useMaxForLimit()
Dialect
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. 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) <p/> So essentially, is limit relative from offset? Or is limit absolute?
useMaxForLimit
in class Dialect
public boolean supportsLimitOffset()
Dialect
Does this dialect’s LIMIT support (if any) additionally support specifying an offset?
supportsLimitOffset
in class Dialect
public String getLimitString(String querySelect, int offset, int limit)
Dialect
Given a limit and an offset, apply the limit clause to the query.
getLimitString
in class Dialect
querySelect
- The query to which to apply the limit.offset
- The offset of the limitlimit
- The limit of the limit ;)public boolean supportsVariableLimit()
Dialect
Does this dialect support bind variables (i.e., prepared statement parameters) for its limit/offset?
supportsVariableLimit
in class Dialect
public ViolatedConstraintNameExtracter getViolatedConstraintNameExtracter()
getViolatedConstraintNameExtracter
in interface ConversionContext
getViolatedConstraintNameExtracter
in class Dialect
public boolean supportsCurrentTimestampSelection()
Dialect
Does this dialect support a way to retrieve the database’s current timestamp value?
supportsCurrentTimestampSelection
in class Dialect
public boolean isCurrentTimestampSelectStringCallable()
Dialect
Should the value returned by Dialect.getCurrentTimestampSelectString()
be treated as callable. Typically this indicates that JDBC escape
syntax is being used…
isCurrentTimestampSelectStringCallable
in class Dialect
Dialect.getCurrentTimestampSelectString()
return
is callable; false otherwise.public String getCurrentTimestampSelectString()
Dialect
Retrieve the command used to retrieve the current timestamp from the database.
getCurrentTimestampSelectString
in class Dialect
public MultiTableBulkIdStrategy getDefaultMultiTableBulkIdStrategy()
getDefaultMultiTableBulkIdStrategy
in class Dialect
public UniqueDelegate getUniqueDelegate()
Dialect
Get the UniqueDelegate supported by this dialect
getUniqueDelegate
in class Dialect
public IdentityColumnSupport getIdentityColumnSupport()
Dialect
Get the appropriate IdentityColumnSupport
getIdentityColumnSupport
in class Dialect
public String toBooleanValueString(boolean bool)
Dialect
The SQL literal value to which this database maps boolean values.
toBooleanValueString
in class Dialect
bool
- The boolean valueCopyright © 2001-2018 Red Hat, Inc. All Rights Reserved.