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HSQLDialect (Hibernate API Documentation) - Hibernate 2.1.8 正式版 API 英文文档

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net.sf.hibernate.dialect
Class HSQLDialect

java.lang.Object
  net.sf.hibernate.dialect.Dialect
      net.sf.hibernate.dialect.HSQLDialect

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public class HSQLDialect

extends Dialect

An SQL dialect compatible with HSQLDB (Hypersonic SQL).

Author:

Christoph Sturm

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Field Summary

 

Fields inherited from class net.sf.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?
SQLExceptionConverter	buildSQLExceptionConverter()           Build an instance of the SQLExceptionConverter preferred by this dialect for converting SQLExceptions into Hibernate's JDBCException hierarchy.
CaseFragment	createCaseFragment()           Create a CaseFragment for this dialect.
String	getAddColumnString()           The syntax used to add a column to a table (optional).
String	getIdentityColumnString()           The keyword used to specify an identity column, if identity column key generation is supported.
String	getIdentityInsertString()           The keyword used to insert a generated value into an identity column (or null)
String	getIdentitySelectString()           The syntax that returns the identity value of the last insert, if identity column key generation is supported.
String	getLimitString(String sql, boolean hasOffset)           Add a LIMIT clause to the given SQL SELECT
boolean	supportsCheck()           Does this dialect support check constraints?
boolean	supportsForUpdate()           Does this dialect support the FOR UPDATE syntax?
boolean	supportsIdentityColumns()           Does this dialect support identity column key generation?
boolean	supportsIfExistsAfterTableName()
boolean	supportsLimit()           Does this Dialect have some kind of LIMIT syntax?
boolean	supportsUnique()           Not supported in 1.7.1 (1.7.2 only)

 

Methods inherited from class net.sf.hibernate.dialect.Dialect

appendIdentitySelectToInsert, bindLimitParametersInReverseOrder, closeQuote, createOuterJoinFragment, dropConstraints, getAddForeignKeyConstraintString, getAddPrimaryKeyConstraintString, getCascadeConstraintsString, getCreateSequenceString, getDefaultProperties, getDialect, getDialect, getDropForeignKeyString, getDropSequenceString, getFunctions, getLimitString, getLowercaseFunction, getNoColumnsInsertString, getNullColumnString, getQuerySequencesString, getSchemaSeparator, getSequenceNextValString, getTypeName, getTypeName, getViolatedConstraintNameExtracter, hasAlterTable, hasDataTypeInIdentityColumn, openQuote, qualifyIndexName, registerColumnType, registerColumnType, registerFunction, supportsForUpdateNowait, supportsForUpdateOf, supportsIfExistsBeforeTableName, supportsLimitOffset, supportsSequences, supportsUniqueConstraintInCreateAlterTable, supportsVariableLimit, toString, 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

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supportsIdentityColumns

public boolean supportsIdentityColumns()

Description copied from class: Dialect

Does this dialect support identity column key generation?

Overrides:

supportsIdentityColumns in class Dialect

Returns:

boolean

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getIdentityColumnString

public String getIdentityColumnString()

Description copied from class: Dialect

The keyword used to specify an identity column, if identity column key generation is supported.

Overrides:

getIdentityColumnString in class Dialect

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getIdentitySelectString

public String getIdentitySelectString()

Description copied from class: Dialect

The syntax that returns the identity value of the last insert, if identity column key generation is supported.

Overrides:

getIdentitySelectString in class Dialect

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getIdentityInsertString

public String getIdentityInsertString()

Description copied from class: Dialect

The keyword used to insert a generated value into an identity column (or null)

Overrides:

getIdentityInsertString in class Dialect

Returns:

String

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supportsForUpdate

public boolean supportsForUpdate()

Description copied from class: Dialect

Does this dialect support the FOR UPDATE syntax?

Overrides:

supportsForUpdate in class Dialect

Returns:

boolean

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supportsUnique

public boolean supportsUnique()

Not supported in 1.7.1 (1.7.2 only)

Overrides:

supportsUnique in class Dialect

Returns:

boolean

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supportsLimit

public boolean supportsLimit()

Description copied from class: Dialect

Does this Dialect have some kind of LIMIT syntax?

Overrides:

supportsLimit in class Dialect

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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

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createCaseFragment

public CaseFragment createCaseFragment()

Description copied from class: Dialect

Create a CaseFragment for this dialect.

Overrides:

createCaseFragment in class Dialect

Returns:

OuterJoinGenerator

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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

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supportsIfExistsAfterTableName

public boolean supportsIfExistsAfterTableName()

Overrides:

supportsIfExistsAfterTableName in class Dialect

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supportsCheck

public boolean supportsCheck()

Description copied from class: Dialect

Does this dialect support check constraints?

Overrides:

supportsCheck in class Dialect

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buildSQLExceptionConverter

public SQLExceptionConverter buildSQLExceptionConverter()

Build an instance of the SQLExceptionConverter preferred by this dialect for converting SQLExceptions into Hibernate's JDBCException hierarchy. The default Dialect implementation simply returns a converter based on X/Open SQLState codes.

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 ErrorCode rather than the SQLState. Unfortunately, the ErrorCode is a vendor- specific approach.

Overrides:

buildSQLExceptionConverter in class Dialect

Returns:

The Dialect's preferred SQLExceptionConverter.

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