org.hibernate.dialect
Class HSQLDialect

java.lang.Object
  org.hibernate.dialect.Dialect
      org.hibernate.dialect.HSQLDialect

public class HSQLDialect

extends Dialect

An SQL dialect compatible with HSQLDB (Hypersonic SQL).

Note this version supports HSQLDB version 1.8 and higher, only.

Author:

Christoph Sturm, Phillip Baird

Field Summary

Fields inherited from class org.hibernate.dialect.Dialect

CLOSED_QUOTE, QUOTE

Constructor Summary

HSQLDialect()

Method Summary

boolean	bindLimitParametersFirst() Does the LIMIT clause come at the start of the SELECT statement, rather than at the end?
String	getAddColumnString() The syntax used to add a column to a table (optional).
String[]	getCreateSequenceStrings(String sequenceName) The multiline script used to create a sequence, if sequences are supported.
String[]	getDropSequenceStrings(String sequenceName) The multiline script used to drop a sequence, if sequences are supported.
String	getForUpdateString() Does this dialect support the FOR UPDATE syntax?
String	getIdentityColumnString()
String	getIdentityInsertString() The keyword used to insert a generated value into an identity column (or null).
String	getIdentitySelectString()
String	getLimitString(String sql, boolean hasOffset) Add a LIMIT clause to the given SQL SELECT
String	getQuerySequencesString() A query used to find all sequences
String	getSelectSequenceNextValString(String sequenceName) Generate the select expression fragment that will retreive the next value of a sequence, if sequences are supported.
String	getSequenceNextValString(String sequenceName) Generate the appropriate select statement to to retreive the next value of a sequence, if sequences are supported.
ViolatedConstraintNameExtracter	getViolatedConstraintNameExtracter()
boolean	supportsColumnCheck() Does this dialect support column-level check constraints?
boolean	supportsCurrentTimestampSelection()
boolean	supportsIdentityColumns() Does this dialect support identity column key generation?
boolean	supportsIfExistsAfterTableName()
boolean	supportsLimit() Does this Dialect have some kind of LIMIT syntax?
boolean	supportsSequences() Does this dialect support sequences?
boolean	supportsTemporaryTables() HSQL does not really support temp tables; just take advantage of the fact that it is a single user db...
boolean	supportsUnique() Does this dialect support the UNIQUE column syntax?

Methods inherited from class org.hibernate.dialect.Dialect

appendIdentitySelectToInsert, appendLockHint, bindLimitParametersInReverseOrder, buildSQLExceptionConverter, closeQuote, createCaseFragment, createOuterJoinFragment, dropConstraints, dropTemporaryTableAfterUse, forUpdateOfColumns, generateTemporaryTableName, getAddForeignKeyConstraintString, getAddPrimaryKeyConstraintString, getCascadeConstraintsString, getCastTypeName, getColumnComment, getCreateSequenceString, getCreateTemporaryTablePostfix, getCreateTemporaryTableString, getCurrentTimestampSelectString, getCurrentTimestampSQLFunctionName, getDefaultProperties, getDialect, getDialect, getDropForeignKeyString, getDropSequenceString, getForUpdateNowaitString, getForUpdateNowaitString, getForUpdateString, getForUpdateString, getFunctions, getHibernateTypeName, getHibernateTypeName, getIdentityColumnString, getIdentitySelectString, getKeywords, getLimitString, getLowercaseFunction, getMaxAliasLength, getNativeIdentifierGeneratorClass, getNoColumnsInsertString, getNullColumnString, getResultSet, getSelectClauseNullString, getSelectGUIDString, getTableComment, getTableTypeString, getTypeName, getTypeName, hasAlterTable, hasDataTypeInIdentityColumn, hasSelfReferentialForeignKeyBug, isCurrentTimestampSelectStringCallable, openQuote, performTemporaryTableDDLInIsolation, qualifyIndexName, quote, registerColumnType, registerColumnType, registerFunction, registerHibernateType, registerHibernateType, registerKeyword, registerResultSetOutParameter, supportsCascadeDelete, supportsCommentOn, supportsIfExistsBeforeTableName, supportsInsertSelectIdentity, supportsLimitOffset, supportsNotNullUnique, supportsOuterJoinForUpdate, supportsParametersInInsertSelect, supportsTableCheck, supportsUnionAll, supportsUniqueConstraintInCreateAlterTable, supportsVariableLimit, toBooleanValueString, toString, transformSelectString, useInputStreamToInsertBlob, useMaxForLimit

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Constructor Detail

HSQLDialect

public HSQLDialect()

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

supportsIdentityColumns

public boolean supportsIdentityColumns()

Description copied from class: Dialect

Does this dialect support identity column key generation?

Overrides:

supportsIdentityColumns in class Dialect

Returns:

boolean

getIdentityColumnString

public String getIdentityColumnString()

Overrides:

getIdentityColumnString in class Dialect

getIdentitySelectString

public String getIdentitySelectString()

Overrides:

getIdentitySelectString in class Dialect

getIdentityInsertString

public String getIdentityInsertString()

Description copied from class: Dialect

The keyword used to insert a generated value into an identity column (or null). Need if the dialect does not support inserts that specify no column values.

Overrides:

getIdentityInsertString in class Dialect

Returns:

String

getForUpdateString

public String getForUpdateString()

Description copied from class: Dialect

Does this dialect support the FOR UPDATE syntax?

Overrides:

getForUpdateString in class Dialect

Returns:

boolean

supportsUnique

public boolean supportsUnique()

Description copied from class: Dialect

Does this dialect support the UNIQUE column syntax?

Overrides:

supportsUnique in class Dialect

Returns:

boolean

supportsLimit

public boolean supportsLimit()

Description copied from class: Dialect

Does this Dialect have some kind of LIMIT syntax?

Overrides:

supportsLimit in class Dialect

getLimitString

public String getLimitString(String sql,
                             boolean hasOffset)

Description copied from class: Dialect

Add a LIMIT clause to the given SQL SELECT

Overrides:

getLimitString in class Dialect

Returns:

the modified SQL

bindLimitParametersFirst

public boolean bindLimitParametersFirst()

Description copied from class: Dialect

Does the LIMIT clause come at the start of the SELECT statement, rather than at the end?

Overrides:

bindLimitParametersFirst in class Dialect

Returns:

true if limit parameters should come before other parameters

supportsIfExistsAfterTableName

public boolean supportsIfExistsAfterTableName()

Overrides:

supportsIfExistsAfterTableName in class Dialect

supportsColumnCheck

public boolean supportsColumnCheck()

Description copied from class: Dialect

Does this dialect support column-level check constraints?

Overrides:

supportsColumnCheck in class Dialect

getCreateSequenceStrings

public String[] getCreateSequenceStrings(String sequenceName)

Description copied from class: Dialect

The multiline script used to create a sequence, if sequences are supported.

Overrides:

getCreateSequenceStrings in class Dialect

Parameters:

sequenceName - the name of the sequence

Returns:

String[]

getDropSequenceStrings

public String[] getDropSequenceStrings(String sequenceName)

Description copied from class: Dialect

The multiline script used to drop a sequence, if sequences are supported.

Overrides:

getDropSequenceStrings in class Dialect

Parameters:

sequenceName - the name of the sequence

Returns:

String[]

getSelectSequenceNextValString

public String getSelectSequenceNextValString(String sequenceName)

Description copied from class: Dialect

Generate the select expression fragment that will retreive the next value of a sequence, if sequences are supported.

This differs from Dialect.getSequenceNextValString(String) in that this should return an expression usable within another select statement.

Overrides:

getSelectSequenceNextValString in class Dialect

Parameters:

sequenceName - the name of the sequence

Returns:

String

getSequenceNextValString

public String getSequenceNextValString(String sequenceName)

Description copied from class: Dialect

Generate the appropriate select statement to to retreive the next value of a sequence, if sequences are supported.

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.

getQuerySequencesString

public String getQuerySequencesString()

Description copied from class: Dialect

A query used to find all sequences

Overrides:

getQuerySequencesString in class Dialect

See Also:

SchemaUpdate

supportsSequences

public boolean supportsSequences()

Description copied from class: Dialect

Does this dialect support sequences?

Overrides:

supportsSequences in class Dialect

Returns:

boolean

getViolatedConstraintNameExtracter

public ViolatedConstraintNameExtracter getViolatedConstraintNameExtracter()

Overrides:

getViolatedConstraintNameExtracter in class Dialect

supportsTemporaryTables

public boolean supportsTemporaryTables()

HSQL does not really support temp tables; just take advantage of the fact that it is a single user db...

Overrides:

supportsTemporaryTables in class Dialect

supportsCurrentTimestampSelection

public boolean supportsCurrentTimestampSelection()

Overrides:

supportsCurrentTimestampSelection in class Dialect