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SAPDBDialect (Hibernate API Documentation) - Hibernate 3.2.3 正式版 API 英文文档

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org.hibernate.dialect
Class SAPDBDialect

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

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public class SAPDBDialect

extends Dialect

An SQL dialect compatible with SAP DB.

Author:

Brad Clow

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Field Summary

 

Fields inherited from class org.hibernate.dialect.Dialect

CLOSED_QUOTE, DEFAULT_BATCH_SIZE, NO_BATCH, QUOTE

 

Constructor Summary

SAPDBDialect()

 

Method Summary
CaseFragment	createCaseFragment()           Create a CaseFragment strategy responsible for handling this dialect's variations in how CASE statements are handled.
JoinFragment	createOuterJoinFragment()           Create a JoinFragment strategy responsible for handling this dialect's variations in how joins are handled.
boolean	dropConstraints()           Do we need to drop constraints before dropping tables in this dialect?
String	generateTemporaryTableName(String baseTableName)           Generate a temporary table name given the bas table.
String	getAddColumnString()           The syntax used to add a column to a table (optional).
String	getAddForeignKeyConstraintString(String constraintName, String[] foreignKey, String referencedTable, String[] primaryKey, boolean referencesPrimaryKey)           The syntax used to add a foreign key constraint to a table.
String	getAddPrimaryKeyConstraintString(String constraintName)           The syntax used to add a primary key constraint to a table.
String	getCreateSequenceString(String sequenceName)           Typically dialects which support sequences can create a sequence with a single command.
String	getCreateTemporaryTablePostfix()           Get any fragments needing to be postfixed to the command for temporary table creation.
String	getDropSequenceString(String sequenceName)           Typically dialects which support sequences can drop a sequence with a single command.
String	getNullColumnString()           The keyword used to specify a nullable column.
String	getQuerySequencesString()           Get the select command used retrieve the names of all sequences.
String	getSelectSequenceNextValString(String sequenceName)           Generate the select expression fragment that will retreive the next value of a sequence as part of another (typically DML) statement.
String	getSequenceNextValString(String sequenceName)           Generate the appropriate select statement to to retreive the next value of a sequence.
boolean	supportsSequences()           Does this dialect support sequences?
boolean	supportsTemporaryTables()           Does this dialect support temporary tables?

 

Methods inherited from class org.hibernate.dialect.Dialect

appendIdentitySelectToInsert, appendLockHint, applyLocksToSql, areStringComparisonsCaseInsensitive, bindLimitParametersFirst, bindLimitParametersInReverseOrder, buildSQLExceptionConverter, closeQuote, doesReadCommittedCauseWritersToBlockReaders, doesRepeatableReadCauseReadersToBlockWriters, dropTemporaryTableAfterUse, forUpdateOfColumns, getCascadeConstraintsString, getCastTypeName, getColumnComment, getCreateMultisetTableString, getCreateSequenceString, getCreateSequenceStrings, getCreateSequenceStrings, getCreateTableString, getCreateTemporaryTableString, getCurrentTimestampSelectString, getCurrentTimestampSQLFunctionName, getDefaultProperties, getDialect, getDialect, getDropForeignKeyString, getDropSequenceStrings, getForUpdateNowaitString, getForUpdateNowaitString, getForUpdateString, getForUpdateString, getForUpdateString, getFunctions, getHibernateTypeName, getHibernateTypeName, getIdentityColumnString, getIdentityColumnString, getIdentityInsertString, getIdentitySelectString, getIdentitySelectString, getKeywords, getLimitString, getLimitString, getLockingStrategy, getLowercaseFunction, getMaxAliasLength, getNativeIdentifierGeneratorClass, getNoColumnsInsertString, getResultSet, getSelectClauseNullString, getSelectGUIDString, getTableComment, getTableTypeString, getTypeName, getTypeName, getViolatedConstraintNameExtracter, hasAlterTable, hasDataTypeInIdentityColumn, hasSelfReferentialForeignKeyBug, isCurrentTimestampSelectStringCallable, openQuote, performTemporaryTableDDLInIsolation, qualifyIndexName, quote, registerColumnType, registerColumnType, registerFunction, registerHibernateType, registerHibernateType, registerKeyword, registerResultSetOutParameter, supportsBindAsCallableArgument, supportsCascadeDelete, supportsCircularCascadeDeleteConstraints, supportsColumnCheck, supportsCommentOn, supportsCurrentTimestampSelection, supportsEmptyInList, supportsExistsInSelect, supportsExpectedLobUsagePattern, supportsIdentityColumns, supportsIfExistsAfterTableName, supportsIfExistsBeforeTableName, supportsInsertSelectIdentity, supportsLimit, supportsLimitOffset, supportsLobValueChangePropogation, supportsNotNullUnique, supportsOuterJoinForUpdate, supportsParametersInInsertSelect, supportsPooledSequences, supportsResultSetPositionQueryMethodsOnForwardOnlyCursor, supportsRowValueConstructorSyntax, supportsRowValueConstructorSyntaxInInList, supportsSubqueryOnMutatingTable, supportsSubselectAsInPredicateLHS, supportsTableCheck, supportsUnboundedLobLocatorMaterialization, supportsUnionAll, supportsUnique, 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

SAPDBDialect

public SAPDBDialect()

Method Detail

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:

True if constraints must be dropped prior to dropping the table; false otherwise.

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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

Returns:

The "add column" fragment.

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getAddForeignKeyConstraintString

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

Description copied from class: Dialect

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

Overrides:

getAddForeignKeyConstraintString in class Dialect

Parameters:

constraintName - The FK constraint name.

foreignKey - The names of the columns comprising the FK

referencedTable - The table referenced by the FK

primaryKey - The explicit columns in the referencedTable referenced by this FK.

referencesPrimaryKey - if false, constraint should be explicit about which column names the constraint refers to

Returns:

the "add FK" fragment

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getAddPrimaryKeyConstraintString

public String getAddPrimaryKeyConstraintString(String constraintName)

Description copied from class: Dialect

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

Overrides:

getAddPrimaryKeyConstraintString in class Dialect

Parameters:

constraintName - The name of the PK constraint.

Returns:

The "add PK" fragment

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getNullColumnString

public String getNullColumnString()

Description copied from class: Dialect

The keyword used to specify a nullable column.

Overrides:

getNullColumnString in class Dialect

Returns:

String

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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.

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.

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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 as part of another (typically DML) statement.

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

Overrides:

getSelectSequenceNextValString in class Dialect

Parameters:

sequenceName - the name of the sequence

Returns:

The "nextval" fragment.

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getCreateSequenceString

public String getCreateSequenceString(String sequenceName)

Description copied from class: Dialect

Typically dialects which support sequences can create a sequence with a single command. This is convenience form of Dialect.getCreateSequenceStrings(java.lang.String) to help facilitate that.

Dialects which support sequences and can create a sequence in a single command need *only* override this method. Dialects which support sequences but require multiple commands to create a sequence should instead override Dialect.getCreateSequenceStrings(java.lang.String).

Overrides:

getCreateSequenceString in class Dialect

Parameters:

sequenceName - The name of the sequence

Returns:

The sequence creation command

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getDropSequenceString

public String getDropSequenceString(String sequenceName)

Description copied from class: Dialect

Typically dialects which support sequences can drop a sequence with a single command. This is convenience form of Dialect.getDropSequenceStrings(java.lang.String) to help facilitate that.

Dialects which support sequences and can drop a sequence in a single command need *only* override this method. Dialects which support sequences but require multiple commands to drop a sequence should instead override Dialect.getDropSequenceStrings(java.lang.String).

Overrides:

getDropSequenceString in class Dialect

Parameters:

sequenceName - The name of the sequence

Returns:

The sequence drop commands

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getQuerySequencesString

public String getQuerySequencesString()

Description copied from class: Dialect

Get the select command used retrieve the names of all sequences.

Overrides:

getQuerySequencesString in class Dialect

Returns:

The select command; or null if sequences are not supported.

See Also:

SchemaUpdate

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createOuterJoinFragment

public JoinFragment createOuterJoinFragment()

Description copied from class: Dialect

Create a JoinFragment strategy responsible for handling this dialect's variations in how joins are handled.

Overrides:

createOuterJoinFragment in class Dialect

Returns:

This dialect's JoinFragment strategy.

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supportsSequences

public boolean supportsSequences()

Description copied from class: Dialect

Does this dialect support sequences?

Overrides:

supportsSequences in class Dialect

Returns:

True if sequences supported; false otherwise.

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createCaseFragment

public CaseFragment createCaseFragment()

Description copied from class: Dialect

Create a CaseFragment strategy responsible for handling this dialect's variations in how CASE statements are handled.

Overrides:

createCaseFragment in class Dialect

Returns:

This dialect's CaseFragment strategy.

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supportsTemporaryTables

public boolean supportsTemporaryTables()

Description copied from class: Dialect

Does this dialect support temporary tables?

Overrides:

supportsTemporaryTables in class Dialect

Returns:

True if temp tables are supported; false otherwise.

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getCreateTemporaryTablePostfix

public String getCreateTemporaryTablePostfix()

Description copied from class: Dialect

Get any fragments needing to be postfixed to the command for temporary table creation.

Overrides:

getCreateTemporaryTablePostfix in class Dialect

Returns:

Any required postfix.

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generateTemporaryTableName

public String generateTemporaryTableName(String baseTableName)

Description copied from class: Dialect

Generate a temporary table name given the bas table.

Overrides:

generateTemporaryTableName in class Dialect

Parameters:

baseTableName - The table name from which to base the temp table name.

Returns:

The generated temp table name.

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