FrontBaseDialect (Hibernate JavaDocs)
Date: 2012-04-05

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## org.hibernate.dialect
Class FrontBaseDialect

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

All Implemented Interfaces:
  ConversionContext

    public class FrontBaseDialect

extends Dialect

An SQL Dialect for Frontbase. Assumes you're using the latest version of the FrontBase JDBC driver, available from `http://frontbase.com/`

NOTE: The latest JDBC driver is not always included with the latest release of FrontBase. Download the driver separately, and enjoy the informative release notes.

This dialect was tested with JDBC driver version 2.3.1. This driver contains a bug that causes batches of updates to fail. (The bug should be fixed in the next release of the JDBC driver.) If you are using JDBC driver 2.3.1, you can work-around this problem by setting the following in your `hibernate.properties` file: `hibernate.jdbc.batch_size=15`

Field Summary

Fields inherited from class org.hibernate.dialect.Dialect
`CLOSED_QUOTE, DEFAULT_BATCH_SIZE, LEGACY_LOB_MERGE_STRATEGY, NEW_LOCATOR_LOB_MERGE_STRATEGY, NO_BATCH, QUOTE, STREAM_XFER_LOB_MERGE_STRATEGY`

Constructor Summary
`FrontBaseDialect()`

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` | `getCascadeConstraintsString()` Completely optional cascading drop clause
`String` | `getCurrentTimestampCallString()`
`String` | `getForUpdateString()` Does this dialect support the `FOR UPDATE` syntax.
`LockingStrategy` | `getLockingStrategy(Lockable lockable, LockMode lockMode)` Get a strategy instance which knows how to acquire a database-level lock of the specified mode for this dialect.
`boolean` | `isCurrentTimestampSelectStringCallable()` Should the value returned by `Dialect.getCurrentTimestampSelectString()` be treated as callable.

Methods inherited from class org.hibernate.dialect.Dialect
`appendIdentitySelectToInsert, appendLockHint, applyLocksToSql, areStringComparisonsCaseInsensitive, bindLimitParametersFirst, bindLimitParametersInReverseOrder, buildSQLExceptionConversionDelegate, buildSQLExceptionConverter, closeQuote, convertToFirstRowValue, createCaseFragment, createOuterJoinFragment, doesReadCommittedCauseWritersToBlockReaders, doesRepeatableReadCauseReadersToBlockWriters, dropTemporaryTableAfterUse, forceLimitUsage, forUpdateOfColumns, generateTemporaryTableName, getAddForeignKeyConstraintString, getAddPrimaryKeyConstraintString, getAddUniqueConstraintString, getCaseInsensitiveLike, getCastTypeName, getColumnAliasExtractor, getColumnComment, getCreateMultisetTableString, getCreateSequenceString, getCreateSequenceString, getCreateSequenceStrings, getCreateSequenceStrings, getCreateTableString, getCreateTemporaryTablePostfix, getCreateTemporaryTableString, getCrossJoinSeparator, getCurrentTimestampSelectString, getCurrentTimestampSQLFunctionName, getDefaultProperties, getDialect, getDialect, getDropForeignKeyString, getDropSequenceString, getDropSequenceStrings, getDropTemporaryTableString, getForUpdateNowaitString, getForUpdateNowaitString, getForUpdateString, getForUpdateString, getForUpdateString, getForUpdateString, getFunctions, getHibernateTypeName, getHibernateTypeName, getIdentityColumnString, getIdentityColumnString, getIdentityInsertString, getIdentitySelectString, getIdentitySelectString, getKeywords, getLimitString, getLimitString, getLobMergeStrategy, getLowercaseFunction, getMaxAliasLength, getNativeIdentifierGeneratorClass, getNoColumnsInsertString, getNullColumnString, getQuerySequencesString, getReadLockString, getResultSet, getSelectClauseNullString, getSelectGUIDString, getSelectSequenceNextValString, getSequenceNextValString, getSqlTypeDescriptorOverride, getTableComment, getTableTypeString, getTypeName, getTypeName, getViolatedConstraintNameExtracter, getWriteLockString, hasAlterTable, hasDataTypeInIdentityColumn, hasSelfReferentialForeignKeyBug, isLockTimeoutParameterized, openQuote, performTemporaryTableDDLInIsolation, qualifyIndexName, quote, registerColumnType, registerColumnType, registerFunction, registerHibernateType, registerHibernateType, registerKeyword, registerResultSetOutParameter, remapSqlTypeDescriptor, replaceResultVariableInOrderByClauseWithPosition, requiresCastingOfParametersInSelectClause, supportsBindAsCallableArgument, supportsCascadeDelete, supportsCaseInsensitiveLike, supportsCircularCascadeDeleteConstraints, supportsColumnCheck, supportsCommentOn, supportsCurrentTimestampSelection, supportsEmptyInList, supportsExistsInSelect, supportsExpectedLobUsagePattern, supportsIdentityColumns, supportsIfExistsAfterTableName, supportsIfExistsBeforeTableName, supportsInsertSelectIdentity, supportsLimit, supportsLimitOffset, supportsLobValueChangePropogation, supportsLockTimeouts, supportsNotNullUnique, supportsOuterJoinForUpdate, supportsParametersInInsertSelect, supportsPooledSequences, supportsResultSetPositionQueryMethodsOnForwardOnlyCursor, supportsRowValueConstructorSyntax, supportsRowValueConstructorSyntaxInInList, supportsSequences, supportsSubqueryOnMutatingTable, supportsSubselectAsInPredicateLHS, supportsTableCheck, supportsTemporaryTables, supportsTupleCounts, supportsTupleDistinctCounts, 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

### FrontBaseDialect

    public FrontBaseDialect()

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.

### getCascadeConstraintsString

    public String getCascadeConstraintsString()

  Description copied from class: `Dialect`
  Completely optional cascading drop clause

  Overrides:
    `getCascadeConstraintsString` in class `Dialect`
  Returns:
    String

### 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.

### getForUpdateString

    public String getForUpdateString()

  Does this dialect support the `FOR UPDATE` syntax. No!

  Overrides:
    `getForUpdateString` in class `Dialect`
  Returns:
    false always. FrontBase doesn't support this syntax, which was dropped with SQL92

### 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 syntax is being used...

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

### getLockingStrategy

    public LockingStrategy getLockingStrategy(Lockable lockable,
                                              LockMode lockMode)

  Description copied from class: `Dialect`
  Get a strategy instance which knows how to acquire a database-level lock of the specified mode for this dialect.

  Overrides:
    `getLockingStrategy` in class `Dialect`
  Parameters:
    `lockable` - The persister for the entity to be locked.
    `lockMode` - The type of lock to be acquired.
  Returns:
    The appropriate locking strategy.

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