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

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net.sf.hibernate.dialect
Class PostgreSQLDialect

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

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public class PostgreSQLDialect

extends Dialect

An SQL dialect for Postgres

Author:

Gavin King

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Field Summary

 

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

CLOSED_QUOTE, QUOTE

 

Constructor Summary

PostgreSQLDialect()

 

Method Summary
boolean	bindLimitParametersInReverseOrder()           Does the LIMIT clause specify arguments in the "reverse" order limit, offset instead of offset, limit?
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	getCascadeConstraintsString()           Completely optional cascading drop clause
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	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	supportsForUpdateOf()           Does this dialect support FOR UPDATE OF, allowing particular rows to be locked?
boolean	supportsLimit()           Does this Dialect have some kind of LIMIT syntax?
boolean	supportsSequences()           Does this dialect support sequences?

 

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

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

 

Methods inherited from class java.lang.Object

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

 

Constructor Detail

PostgreSQLDialect

public PostgreSQLDialect()

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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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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getCascadeConstraintsString

public String getCascadeConstraintsString()

Description copied from class: Dialect

Completely optional cascading drop clause

Overrides:

getCascadeConstraintsString in class Dialect

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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bindLimitParametersInReverseOrder

public boolean bindLimitParametersInReverseOrder()

Description copied from class: Dialect

Does the LIMIT clause specify arguments in the "reverse" order limit, offset instead of offset, limit?

Overrides:

bindLimitParametersInReverseOrder in class Dialect

Returns:

true if the correct order is limit, offset

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supportsForUpdateOf

public boolean supportsForUpdateOf()

Description copied from class: Dialect

Does this dialect support FOR UPDATE OF, allowing particular rows to be locked?

Overrides:

supportsForUpdateOf in class Dialect

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