public class HSQLDialect extends 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 and Description | 
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HSQLDialect()
Constructs a HSQLDialect 
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| Modifier and Type | Method and Description | 
|---|---|
boolean | 
bindLimitParametersFirst()
Does the LIMIT clause come at the start of the
 SELECT statement, rather than at the end? 
 | 
boolean | 
doesReadCommittedCauseWritersToBlockReaders()
For the underlying database, is READ_COMMITTED isolation implemented by
 forcing readers to wait for write locks to be released? 
 | 
boolean | 
doesRepeatableReadCauseReadersToBlockWriters()
For the underlying database, is REPEATABLE_READ isolation implemented by
 forcing writers to wait for read locks to be released? 
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String | 
getAddColumnString()
The syntax used to add a column to a table (optional). 
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protected String | 
getCreateSequenceString(String sequenceName)
HSQL will start with 0, by default. 
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protected String | 
getCreateSequenceString(String sequenceName,
                       int initialValue,
                       int incrementSize)
Because of the overridden  
getCreateSequenceString(String), we must also override
 getCreateSequenceString(String, int, int) to prevent 2 instances of "start with". | 
String | 
getCurrentTimestampSelectString()
Retrieve the command used to retrieve the current timestamp from the
 database. 
 | 
String | 
getCurrentTimestampSQLFunctionName()
The name of the database-specific SQL function for retrieving the
 current timestamp. 
 | 
MultiTableBulkIdStrategy | 
getDefaultMultiTableBulkIdStrategy()  | 
protected String | 
getDropSequenceString(String sequenceName)
Typically dialects which support sequences can drop a sequence
 with a single command. 
 | 
String | 
getForUpdateString()
Get the string to append to SELECT statements to acquire locks
 for this dialect. 
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IdentityColumnSupport | 
getIdentityColumnSupport()
Get the appropriate  
IdentityColumnSupport | 
LimitHandler | 
getLimitHandler()
Returns the delegate managing LIMIT clause. 
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String | 
getLimitString(String sql,
              boolean hasOffset)
Apply s limit clause to the query. 
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LockingStrategy | 
getLockingStrategy(Lockable lockable,
                  LockMode lockMode)
For HSQLDB 2.0, this is a copy of the base class implementation. 
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NameQualifierSupport | 
getNameQualifierSupport()
By default interpret this based on DatabaseMetaData. 
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String | 
getQuerySequencesString()
Get the select command used retrieve the names of all sequences. 
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String | 
getSelectClauseNullString(int sqlType)
Given a  
Types type code, determine an appropriate
 null value to use in a select clause. | 
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. 
 | 
ViolatedConstraintNameExtracter | 
getViolatedConstraintNameExtracter()  | 
boolean | 
isCurrentTimestampSelectStringCallable()
Should the value returned by  
Dialect.getCurrentTimestampSelectString()
 be treated as callable. | 
boolean | 
requiresCastingOfParametersInSelectClause()
Does this dialect require that parameters appearing in the SELECT clause be wrapped in cast()
 calls to tell the db parser the expected type. 
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boolean | 
supportsColumnCheck()
Does this dialect support column-level check constraints? 
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boolean | 
supportsCommentOn()
Does this dialect/database support commenting on tables, columns, etc? 
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boolean | 
supportsCurrentTimestampSelection()
HSQLDB 1.8.x requires CALL CURRENT_TIMESTAMP but this should not
 be treated as a callable statement. 
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boolean | 
supportsEmptyInList()
Does this dialect support empty IN lists?
 
 For example, is [where XYZ in ()] a supported construct? 
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boolean | 
supportsIfExistsAfterTableName()
For dropping a table, can the phrase "if exists" be applied after the table name?
 
 NOTE : Only one or the other (or neither) of this and  
Dialect.supportsIfExistsBeforeTableName() should return true | 
boolean | 
supportsLimit()
Does this dialect support some form of limiting query results
 via a SQL clause? 
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boolean | 
supportsLobValueChangePropogation()
Does the dialect support propagating changes to LOB
 values back to the database?  Talking about mutating the
 internal value of the locator as opposed to supplying a new
 locator instance... 
 | 
boolean | 
supportsLockTimeouts()
Informational metadata about whether this dialect is known to support
 specifying timeouts for requested lock acquisitions. 
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boolean | 
supportsNamedParameters(DatabaseMetaData databaseMetaData)
Override the DatabaseMetaData#supportsNamedParameters() 
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boolean | 
supportsPooledSequences()
Does this dialect support "pooled" sequences. 
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boolean | 
supportsSequences()
Does this dialect support sequences? 
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boolean | 
supportsTupleDistinctCounts()
Does this dialect support `count(distinct a,b)`? 
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boolean | 
supportsUnionAll()
Does this dialect support UNION ALL, which is generally a faster
 variant of UNION? 
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String | 
toBooleanValueString(boolean bool)
The SQL literal value to which this database maps boolean values. 
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addSqlHintOrComment, appendLockHint, appendLockHint, applyLocksToSql, areStringComparisonsCaseInsensitive, augmentRecognizedTableTypes, bindLimitParametersInReverseOrder, buildIdentifierHelper, buildSQLExceptionConversionDelegate, buildSQLExceptionConverter, canCreateCatalog, canCreateSchema, cast, cast, cast, closeQuote, contributeTypes, convertToFirstRowValue, createCaseFragment, createOuterJoinFragment, defaultScrollMode, dropConstraints, escapeLiteral, forceLimitUsage, forceLobAsLastValue, forUpdateOfColumns, getAddColumnSuffixString, getAddForeignKeyConstraintString, getAddForeignKeyConstraintString, getAddPrimaryKeyConstraintString, getAddUniqueConstraintString, getAlterTableString, getAuxiliaryDatabaseObjectExporter, getCallableStatementSupport, getCascadeConstraintsString, getCaseInsensitiveLike, getCastTypeName, getColumnAliasExtractor, getColumnComment, getCreateCatalogCommand, getCreateMultisetTableString, getCreateSchemaCommand, getCreateSequenceStrings, getCreateSequenceStrings, getCreateTableString, getCrossJoinSeparator, getCurrentSchemaCommand, getDefaultBatchLoadSizingStrategy, getDefaultProperties, getDialect, getDialect, getDropCatalogCommand, getDropForeignKeyString, getDropSchemaCommand, getDropSequenceStrings, getDropTableString, getForeignKeyExporter, getForUpdateNowaitString, getForUpdateNowaitString, getForUpdateSkipLockedString, getForUpdateSkipLockedString, getForUpdateString, getForUpdateString, getForUpdateString, getForUpdateString, getFunctions, getHibernateTypeName, getHibernateTypeName, getIndexExporter, getInExpressionCountLimit, getKeywords, getLimitString, getLobMergeStrategy, getLowercaseFunction, getMaxAliasLength, getNativeIdentifierGeneratorClass, getNativeIdentifierGeneratorStrategy, getNoColumnsInsertString, getNotExpression, getNullColumnString, getQueryHintString, getQueryHintString, getReadLockString, getReadLockString, getResultSet, getResultSet, getResultSet, getSchemaNameResolver, getSelectGUIDString, getSequenceExporter, getSequenceInformationExtractor, getSqlTypeDescriptorOverride, getTableComment, getTableExporter, getTableTypeString, getTypeName, getTypeName, getUniqueDelegate, 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, requiresParensForTupleDistinctCounts, supportsBindAsCallableArgument, supportsCascadeDelete, supportsCaseInsensitiveLike, supportsCircularCascadeDeleteConstraints, supportsExistsInSelect, supportsExpectedLobUsagePattern, supportsIfExistsAfterAlterTable, supportsIfExistsAfterConstraintName, supportsIfExistsBeforeConstraintName, supportsIfExistsBeforeTableName, supportsLimitOffset, supportsNationalizedTypes, supportsNonQueryWithCTE, supportsNotNullUnique, supportsNoWait, supportsOuterJoinForUpdate, supportsParametersInInsertSelect, supportsPartitionBy, supportsResultSetPositionQueryMethodsOnForwardOnlyCursor, supportsRowValueConstructorSyntax, supportsRowValueConstructorSyntaxInInList, supportsSkipLocked, supportsSubqueryOnMutatingTable, supportsSubselectAsInPredicateLHS, supportsTableCheck, supportsTupleCounts, supportsTuplesInSubqueries, supportsUnboundedLobLocatorMaterialization, supportsUnique, supportsUniqueConstraintInCreateAlterTable, supportsValuesList, supportsVariableLimit, toString, transformSelectString, useFollowOnLocking, useFollowOnLocking, useInputStreamToInsertBlob, useMaxForLimitpublic String getAddColumnString()
DialectgetAddColumnString in class Dialectpublic boolean supportsLockTimeouts()
DialectsupportsLockTimeouts in class Dialectpublic String getForUpdateString()
DialectgetForUpdateString in class Dialectpublic LimitHandler getLimitHandler()
DialectgetLimitHandler in class Dialectpublic boolean supportsLimit()
DialectsupportsLimit in class Dialectpublic String getLimitString(String sql, boolean hasOffset)
Dialectvariable
 limit clauses when they support limits.  Thus, when building the
 select command we do not actually need to know the limit or the offest
 since we will just be using placeholders.
 
 Here we do still pass along whether or not an offset was specified
 so that dialects not supporting offsets can generate proper exceptions.
 In general, dialects will override one or the other of this method and
 Dialect.getLimitString(String, int, int).getLimitString in class Dialectsql - The query to which to apply the limit.hasOffset - Is the query requesting an offset?public boolean bindLimitParametersFirst()
DialectbindLimitParametersFirst in class Dialectpublic boolean supportsIfExistsAfterTableName()
DialectDialect.supportsIfExistsBeforeTableName() should return truesupportsIfExistsAfterTableName in class Dialecttrue if the "if exists" can be applied after the table namepublic boolean supportsColumnCheck()
DialectsupportsColumnCheck in class Dialectpublic boolean supportsSequences()
DialectsupportsSequences in class Dialectpublic boolean supportsPooledSequences()
DialectsupportsPooledSequences in class DialectDialect.getCreateSequenceStrings(String, int, int), 
Dialect.getCreateSequenceString(String, int, int)protected String getCreateSequenceString(String sequenceName)
getCreateSequenceString in class DialectsequenceName - The name of the sequenceprotected String getCreateSequenceString(String sequenceName, int initialValue, int incrementSize) throws MappingException
getCreateSequenceString(String), we must also override
 getCreateSequenceString(String, int, int) to prevent 2 instances of "start with".getCreateSequenceString in class DialectsequenceName - The name of the sequenceinitialValue - The initial value to apply to 'create sequence' statementincrementSize - The increment value to apply to 'create sequence' statementMappingException - If sequences are not supported.protected String getDropSequenceString(String sequenceName)
DialectDialect.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).getDropSequenceString in class DialectsequenceName - The name of the sequencepublic String getSelectSequenceNextValString(String sequenceName)
DialectDialect.getSequenceNextValString(String) in that this
 should return an expression usable within another statement.getSelectSequenceNextValString in class DialectsequenceName - the name of the sequencepublic String getSequenceNextValString(String sequenceName)
DialectgetSequenceNextValString in class DialectsequenceName - the name of the sequencepublic String getQuerySequencesString()
DialectgetQuerySequencesString in class DialectSchemaUpdatepublic ViolatedConstraintNameExtracter getViolatedConstraintNameExtracter()
getViolatedConstraintNameExtracter in interface ConversionContextgetViolatedConstraintNameExtracter in class Dialectpublic String getSelectClauseNullString(int sqlType)
DialectTypes type code, determine an appropriate
 null value to use in a select clause.
 
 One thing to consider here is that certain databases might
 require proper casting for the nulls here since the select here
 will be part of a UNION/UNION ALL.getSelectClauseNullString in class DialectsqlType - The Types type code.public boolean supportsUnionAll()
DialectsupportsUnionAll in class Dialectpublic MultiTableBulkIdStrategy getDefaultMultiTableBulkIdStrategy()
getDefaultMultiTableBulkIdStrategy in class Dialectpublic boolean supportsCurrentTimestampSelection()
supportsCurrentTimestampSelection in class Dialectpublic boolean isCurrentTimestampSelectStringCallable()
DialectDialect.getCurrentTimestampSelectString()
 be treated as callable.  Typically this indicates that JDBC escape
 syntax is being used...isCurrentTimestampSelectStringCallable in class DialectDialect.getCurrentTimestampSelectString() return
 is callable; false otherwise.public String getCurrentTimestampSelectString()
DialectgetCurrentTimestampSelectString in class Dialectpublic String getCurrentTimestampSQLFunctionName()
DialectgetCurrentTimestampSQLFunctionName in class Dialectpublic LockingStrategy getLockingStrategy(Lockable lockable, LockMode lockMode)
getLockingStrategy in class Dialectlockable - The persister for the entity to be locked.lockMode - The type of lock to be acquired.public boolean supportsCommentOn()
DialectsupportsCommentOn in class Dialecttrue if commenting is supportedpublic boolean supportsEmptyInList()
DialectsupportsEmptyInList in class Dialectpublic boolean requiresCastingOfParametersInSelectClause()
DialectrequiresCastingOfParametersInSelectClause in class Dialectpublic boolean doesReadCommittedCauseWritersToBlockReaders()
DialectdoesReadCommittedCauseWritersToBlockReaders in class Dialectpublic boolean doesRepeatableReadCauseReadersToBlockWriters()
DialectdoesRepeatableReadCauseReadersToBlockWriters in class Dialectpublic boolean supportsLobValueChangePropogation()
DialectBlob.setBinaryStream(long),
 Blob.setBytes(long, byte[]),
 Blob.setBytes(long, byte[], int, int),
 or Blob.truncate(long).
 
 For CLOBs, the internal value might be changed by:
 Clob.setAsciiStream(long),
 Clob.setCharacterStream(long),
 Clob.setString(long, String),
 Clob.setString(long, String, int, int),
 or Clob.truncate(long).
 
 NOTE : I do not know the correct answer currently for
 databases which (1) are not part of the cruise control process
 or (2) do not Dialect.supportsExpectedLobUsagePattern().supportsLobValueChangePropogation in class Dialectpublic String toBooleanValueString(boolean bool)
DialecttoBooleanValueString in class Dialectbool - The boolean valuepublic boolean supportsTupleDistinctCounts()
DialectsupportsTupleDistinctCounts in class Dialectpublic IdentityColumnSupport getIdentityColumnSupport()
DialectIdentityColumnSupportgetIdentityColumnSupport in class Dialectpublic NameQualifierSupport getNameQualifierSupport()
DialectgetNameQualifierSupport in class Dialectpublic boolean supportsNamedParameters(DatabaseMetaData databaseMetaData) throws SQLException
DialectsupportsNamedParameters in class DialectSQLException - Accessing the DatabaseMetaData can throw it.  Just re-throw and Hibernate will handle.Copyright © 2019 JBoss by Red Hat. All rights reserved.