org.hibernate.dialect
Class InterbaseDialect

java.lang.Object
  extended by org.hibernate.dialect.Dialect
      extended by org.hibernate.dialect.InterbaseDialect
Direct Known Subclasses:
FirebirdDialect

public class InterbaseDialect
extends Dialect

An SQL dialect for Interbase.

Author:
Gavin King

Field Summary
 
Fields inherited from class org.hibernate.dialect.Dialect
CLOSED_QUOTE, DEFAULT_BATCH_SIZE, NO_BATCH, QUOTE
 
Constructor Summary
InterbaseDialect()
           
 
Method Summary
 boolean bindLimitParametersFirst()
          Does the LIMIT clause come at the start of the SELECT statement, rather than at the end?
 boolean bindLimitParametersInReverseOrder()
          ANSI SQL defines the LIMIT clause to be in the form LIMIT offset, limit.
 String getAddColumnString()
          The syntax used to add a column to a table (optional).
 String getCreateSequenceString(String sequenceName)
          Typically dialects which support sequences can create a sequence with a single command.
 String getCurrentTimestampCallString()
           
 String getDropSequenceString(String sequenceName)
          Typically dialects which support sequences can drop a sequence with a single command.
 String getForUpdateString()
          Get the string to append to SELECT statements to acquire locks for this dialect.
 String getForUpdateString(String aliases)
          Get the FOR UPDATE OF column_list fragment appropriate for this dialect given the aliases of the columns to be write locked.
 String getLimitString(String sql, boolean hasOffset)
          Apply s limit clause to the query.
 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 isCurrentTimestampSelectStringCallable()
          Should the value returned by Dialect.getCurrentTimestampSelectString() be treated as callable.
 boolean supportsLimit()
          Does this dialect support some form of limiting query results via a SQL clause?
 boolean supportsSequences()
          Does this dialect support sequences?
 
Methods inherited from class org.hibernate.dialect.Dialect
appendIdentitySelectToInsert, appendLockHint, applyLocksToSql, areStringComparisonsCaseInsensitive, buildSQLExceptionConverter, closeQuote, convertToFirstRowValue, createCaseFragment, createOuterJoinFragment, doesReadCommittedCauseWritersToBlockReaders, doesRepeatableReadCauseReadersToBlockWriters, dropConstraints, dropTemporaryTableAfterUse, forceLimitUsage, forUpdateOfColumns, generateTemporaryTableName, getAddForeignKeyConstraintString, getAddPrimaryKeyConstraintString, getCascadeConstraintsString, getCastTypeName, getColumnComment, getCreateMultisetTableString, getCreateSequenceString, getCreateSequenceStrings, getCreateSequenceStrings, getCreateTableString, getCreateTemporaryTablePostfix, getCreateTemporaryTableString, getCurrentTimestampSelectString, getCurrentTimestampSQLFunctionName, getDefaultProperties, getDialect, getDialect, getDropForeignKeyString, getDropSequenceStrings, getForUpdateNowaitString, getForUpdateNowaitString, getForUpdateString, getFunctions, getHibernateTypeName, getHibernateTypeName, getIdentityColumnString, getIdentityColumnString, getIdentityInsertString, getIdentitySelectString, getIdentitySelectString, getKeywords, getLimitString, getLockingStrategy, getLowercaseFunction, getMaxAliasLength, getNativeIdentifierGeneratorClass, getNoColumnsInsertString, getNullColumnString, getResultSet, getSelectClauseNullString, getSelectGUIDString, getTableComment, getTableTypeString, getTypeName, getTypeName, getViolatedConstraintNameExtracter, hasAlterTable, hasDataTypeInIdentityColumn, hasSelfReferentialForeignKeyBug, openQuote, performTemporaryTableDDLInIsolation, qualifyIndexName, quote, registerColumnType, registerColumnType, registerFunction, registerHibernateType, registerHibernateType, registerKeyword, registerResultSetOutParameter, requiresCastingOfParametersInSelectClause, supportsBindAsCallableArgument, supportsCascadeDelete, supportsCircularCascadeDeleteConstraints, supportsColumnCheck, supportsCommentOn, supportsCurrentTimestampSelection, supportsEmptyInList, supportsExistsInSelect, supportsExpectedLobUsagePattern, supportsIdentityColumns, supportsIfExistsAfterTableName, supportsIfExistsBeforeTableName, supportsInsertSelectIdentity, supportsLimitOffset, supportsLobValueChangePropogation, supportsNotNullUnique, supportsOuterJoinForUpdate, supportsParametersInInsertSelect, supportsPooledSequences, supportsResultSetPositionQueryMethodsOnForwardOnlyCursor, supportsRowValueConstructorSyntax, supportsRowValueConstructorSyntaxInInList, supportsSubqueryOnMutatingTable, supportsSubselectAsInPredicateLHS, supportsTableCheck, supportsTemporaryTables, 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

InterbaseDialect

public InterbaseDialect()
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
Returns:
The "add column" fragment.

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.

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.

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

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

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

getForUpdateString

public String getForUpdateString()
Description copied from class: Dialect
Get the string to append to SELECT statements to acquire locks for this dialect.

Overrides:
getForUpdateString in class Dialect
Returns:
The appropriate FOR UPDATE clause string.

getForUpdateString

public String getForUpdateString(String aliases)
Description copied from class: Dialect
Get the FOR UPDATE OF column_list fragment appropriate for this dialect given the aliases of the columns to be write locked.

Overrides:
getForUpdateString in class Dialect
Parameters:
aliases - The columns to be write locked.
Returns:
The appropriate FOR UPDATE OF column_list clause string.

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.

supportsLimit

public boolean supportsLimit()
Description copied from class: Dialect
Does this dialect support some form of limiting query results via a SQL clause?

Overrides:
supportsLimit in class Dialect
Returns:
True if this dialect supports some form of LIMIT.

getLimitString

public String getLimitString(String sql,
                             boolean hasOffset)
Description copied from class: Dialect
Apply s limit clause to the query.

Typically dialects utilize variable limit caluses when they support limits. Thus, when building the select command we do not actually need to know the limit or the offest since we will just be using placeholders.

Here we do still pass along whether or not an offset was specified so that dialects not supporting offsets can generate proper exceptions. In general, dialects will override one or the other of this method and Dialect.getLimitString(String, int, int).

Overrides:
getLimitString in class Dialect
Parameters:
sql - The query to which to apply the limit.
hasOffset - Is the query requesting an offset?
Returns:
the modified SQL

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

bindLimitParametersInReverseOrder

public boolean bindLimitParametersInReverseOrder()
Description copied from class: Dialect
ANSI SQL defines the LIMIT clause to be in the form LIMIT offset, limit. Does this dialect require us to bind the parameters in reverse order?

Overrides:
bindLimitParametersInReverseOrder in class Dialect
Returns:
true if the correct order is limit, offset

getCurrentTimestampCallString

public String getCurrentTimestampCallString()

isCurrentTimestampSelectStringCallable

public boolean isCurrentTimestampSelectStringCallable()
Description copied from class: Dialect
Should the value returned by Dialect.getCurrentTimestampSelectString() be treated as callable. Typically this indicates that JDBC escape sytnax is being used...

Overrides:
isCurrentTimestampSelectStringCallable in class Dialect
Returns:
True if the Dialect.getCurrentTimestampSelectString() return is callable; false otherwise.


Copyright © 2009 Hibernate.org. All Rights Reserved.