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

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net.sf.hibernate.dialect
Class MySQLDialect

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

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public class MySQLDialect

extends Dialect

An SQL dialect for MySQL.

Author:

Gavin King

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Field Summary

 

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

CLOSED_QUOTE, QUOTE

 

Constructor Summary

MySQLDialect()

 

Method Summary
SQLExceptionConverter	buildSQLExceptionConverter()           Build an instance of the SQLExceptionConverter preferred by this dialect for converting SQLExceptions into Hibernate's JDBCException hierarchy.
char	closeQuote()           The closing quote for a quoted identifier
boolean	dropConstraints()           Do we need to drop constraints before dropping tables in this dialect?
String	getAddColumnString()           The syntax used to add a column to a table (optional).
String	getAddForeignKeyConstraintString(String constraintName, String[] foreignKey, String referencedTable, String[] primaryKey)           The syntax used to add a foreign key constraint to a table.
String	getDropForeignKeyString()
String	getIdentityColumnString()           The keyword used to specify an identity column, if identity column key generation is supported.
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
char	getSchemaSeparator()           The separator between the schema/tablespace name and the table name.
char	openQuote()           The opening quote for a quoted identifier
boolean	qualifyIndexName()           Do we need to qualify index names with the schema name?
boolean	supportsIdentityColumns()           Does this dialect support identity column key generation?
boolean	supportsIfExistsBeforeTableName()
boolean	supportsLimit()           Does this Dialect have some kind of LIMIT syntax?

 

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

appendIdentitySelectToInsert, bindLimitParametersFirst, bindLimitParametersInReverseOrder, createCaseFragment, createOuterJoinFragment, getAddPrimaryKeyConstraintString, getCascadeConstraintsString, getCreateSequenceString, getDefaultProperties, getDialect, getDialect, getDropSequenceString, getFunctions, getIdentityInsertString, getLimitString, getLowercaseFunction, getNoColumnsInsertString, getNullColumnString, getQuerySequencesString, getSequenceNextValString, getTypeName, getTypeName, getViolatedConstraintNameExtracter, hasAlterTable, hasDataTypeInIdentityColumn, registerColumnType, registerColumnType, registerFunction, supportsCheck, supportsForUpdate, supportsForUpdateNowait, supportsForUpdateOf, supportsIfExistsAfterTableName, supportsLimitOffset, supportsSequences, supportsUnique, supportsUniqueConstraintInCreateAlterTable, supportsVariableLimit, toString, useMaxForLimit

 

Methods inherited from class java.lang.Object

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

 

Constructor Detail

MySQLDialect

public MySQLDialect()

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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getDropForeignKeyString

public String getDropForeignKeyString()

Overrides:

getDropForeignKeyString in class Dialect

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dropConstraints

public boolean dropConstraints()

Description copied from class: Dialect

Do we need to drop constraints before dropping tables in this dialect?

Overrides:

dropConstraints in class Dialect

Returns:

boolean

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qualifyIndexName

public boolean qualifyIndexName()

Description copied from class: Dialect

Do we need to qualify index names with the schema name?

Overrides:

qualifyIndexName in class Dialect

Returns:

boolean

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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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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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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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getAddForeignKeyConstraintString

public String getAddForeignKeyConstraintString(String constraintName,
                                               String[] foreignKey,
                                               String referencedTable,
                                               String[] primaryKey)

Description copied from class: Dialect

The syntax used to add a foreign key constraint to a table.

Overrides:

getAddForeignKeyConstraintString in class Dialect

Returns:

String

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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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closeQuote

public char closeQuote()

Description copied from class: Dialect

The closing quote for a quoted identifier

Overrides:

closeQuote in class Dialect

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openQuote

public char openQuote()

Description copied from class: Dialect

The opening quote for a quoted identifier

Overrides:

openQuote in class Dialect

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supportsIfExistsBeforeTableName

public boolean supportsIfExistsBeforeTableName()

Overrides:

supportsIfExistsBeforeTableName in class Dialect

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getSchemaSeparator

public char getSchemaSeparator()

Description copied from class: Dialect

The separator between the schema/tablespace name and the table name.

Overrides:

getSchemaSeparator 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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