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DB2Dialect (Hibernate API Documentation) - Hibernate 2.1.8 正式版 API 英文文档

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net.sf.hibernate.dialect
Class DB2Dialect

java.lang.Object
  net.sf.hibernate.dialect.Dialect
      net.sf.hibernate.dialect.DB2Dialect

Direct Known Subclasses:

DB2390Dialect, DB2400Dialect

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public class DB2Dialect

extends Dialect

An SQL dialect for DB2.

Author:

Gavin King

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Field Summary

 

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

CLOSED_QUOTE, QUOTE

 

Constructor Summary

DB2Dialect()

 

Method Summary
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	getCreateSequenceString(String sequenceName)           The syntax used to create a sequence, if sequences are supported.
String	getDropSequenceString(String sequenceName)           The syntax used to drop a sequence, if sequences are supported.
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
String	getSequenceNextValString(String sequenceName)           The syntax that fetches the next value of a sequence, if sequences are supported.
boolean	supportsIdentityColumns()           Does this dialect support identity column key generation?
boolean	supportsLimit()           Does this Dialect have some kind of LIMIT syntax?
boolean	supportsSequences()           Does this dialect support sequences?
boolean	useMaxForLimit()           Does the LIMIT clause take a "maximum" row number instead of a total number of returned rows?

 

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

appendIdentitySelectToInsert, bindLimitParametersFirst, bindLimitParametersInReverseOrder, buildSQLExceptionConverter, closeQuote, createCaseFragment, createOuterJoinFragment, getAddForeignKeyConstraintString, getAddPrimaryKeyConstraintString, getCascadeConstraintsString, getDefaultProperties, getDialect, getDialect, getDropForeignKeyString, getFunctions, getLimitString, getLowercaseFunction, getNoColumnsInsertString, getNullColumnString, getQuerySequencesString, getSchemaSeparator, getTypeName, getTypeName, getViolatedConstraintNameExtracter, hasAlterTable, hasDataTypeInIdentityColumn, openQuote, qualifyIndexName, registerColumnType, registerColumnType, registerFunction, supportsCheck, supportsForUpdate, supportsForUpdateNowait, supportsForUpdateOf, supportsIfExistsAfterTableName, supportsIfExistsBeforeTableName, supportsLimitOffset, supportsUnique, supportsUniqueConstraintInCreateAlterTable, supportsVariableLimit, toString

 

Methods inherited from class java.lang.Object

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

 

Constructor Detail

DB2Dialect

public DB2Dialect()

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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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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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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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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getSequenceNextValString

public String getSequenceNextValString(String sequenceName)

Description copied from class: Dialect

The syntax that fetches the next value of a sequence, if sequences are supported.

Overrides:

getSequenceNextValString in class Dialect

Parameters:

sequenceName - the name of the sequence

Returns:

String

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getCreateSequenceString

public String getCreateSequenceString(String sequenceName)

Description copied from class: Dialect

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

Overrides:

getCreateSequenceString in class Dialect

Parameters:

sequenceName - the name of the sequence

Returns:

String

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getDropSequenceString

public String getDropSequenceString(String sequenceName)

Description copied from class: Dialect

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

Overrides:

getDropSequenceString in class Dialect

Parameters:

sequenceName - the name of the sequence

Returns:

String

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supportsSequences

public boolean supportsSequences()

Description copied from class: Dialect

Does this dialect support sequences?

Overrides:

supportsSequences 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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useMaxForLimit

public boolean useMaxForLimit()

Description copied from class: Dialect

Does the LIMIT clause take a "maximum" row number instead of a total number of returned rows?

Overrides:

useMaxForLimit in class Dialect

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