Cache71Dialect (Hibernate JavaDocs)

java.lang.Object
- org.hibernate.dialect.Dialect
- - org.hibernate.dialect.Cache71Dialect

All Implemented Interfaces:: ConversionContext

public class Cache71Dialect
extends Dialect

Caché 2007.1 dialect. This class is required in order to use Hibernate with Intersystems Caché SQL. Compatible with Caché 2007.1.

PREREQUISITES

These setup instructions assume that both Caché and Hibernate are installed and operational.

HIBERNATE DIRECTORIES AND FILES

JBoss distributes the InterSystems Cache' dialect for Hibernate 3.2.1 For earlier versions of Hibernate please contact InterSystems Worldwide Response Center (WRC) for the appropriate source files.

CACHÉ DOCUMENTATION

Documentation for Caché is available online when Caché is running. It can also be obtained from the InterSystems website. The book, "Object-oriented Application Development Using the Caché Post-relational Database: is also available from Springer-Verlag.

HIBERNATE DOCUMENTATION

Hibernate comes with extensive electronic documentation. In addition, several books on Hibernate are available from Manning Publications Co. Three available titles are "Hibernate Quickly", "Hibernate in Action", and "Java Persistence with Hibernate".

TO SET UP HIBERNATE FOR USE WITH CACHÉ

The following steps assume that the directory where Caché was installed is C:\CacheSys. This is the default installation directory for Caché. The default installation directory for Hibernate is assumed to be C:\Hibernate.

If either product is installed in a different location, the pathnames that follow should be modified appropriately.

Caché version 2007.1 and above is recommended for use with Hibernate. The next step depends on the location of your CacheDB.jar depending on your version of Caché.

Copy C:\CacheSys\dev\java\lib\JDK15\CacheDB.jar to C:\Hibernate\lib\CacheDB.jar.

Insert the following files into your Java classpath:
- All jar files in the directory C:\Hibernate\lib
- The directory (or directories) where hibernate.properties and/or hibernate.cfg.xml are kept.

In the file, hibernate.properties (or hibernate.cfg.xml), specify the Caché dialect and the Caché version URL settings.

For example, in Hibernate 3.2, typical entries in hibernate.properties would have the following "name=value" pairs:

Property Name	Property Value
hibernate.dialect	org.hibernate.dialect.Cache71Dialect
hibernate.connection.driver_class	com.intersys.jdbc.CacheDriver
hibernate.connection.username	(see note 1)
hibernate.connection.password	(see note 1)
hibernate.connection.url	jdbc:Cache://127.0.0.1:1972/USER

NOTE: Please contact your administrator for the userid and password you should use when attempting access via JDBC. By default, these are chosen to be "_SYSTEM" and "SYS" respectively as noted in the SQL standard.

CACHÉ VERSION URL

This is the standard URL for the JDBC driver. For a JDBC driver on the machine hosting Caché, use the IP "loopback" address, 127.0.0.1. For 1972, the default port, specify the super server port of your Caché instance. For USER, substitute the NAMESPACE which contains your Caché database data.

CACHÉ DIALECTS

Choices for Dialect are:

org.hibernate.dialect.Cache71Dialect (requires Caché 2007.1 or above)

SUPPORT FOR IDENTITY COLUMNS

Caché 2007.1 or later supports identity columns. For Hibernate to use identity columns, specify "native" as the generator.

SEQUENCE DIALECTS SUPPORT SEQUENCES

To use Hibernate sequence support with Caché in a namespace, you must FIRST load the following file into that namespace:

     etc\CacheSequences.xml

For example, at the COS terminal prompt in the namespace, run the following command:

d LoadFile^%apiOBJ("c:\hibernate\etc\CacheSequences.xml","ck")

In your Hibernate mapping you can specify sequence use.

For example, the following shows the use of a sequence generator in a Hibernate mapping:

     <id name="id" column="uid" type="long" unsaved-value="null">
         <generator class="sequence"/>
     </id>

Some versions of Hibernate under some circumstances call getSelectSequenceNextValString() in the dialect. If this happens you will receive the error message: new MappingException( "Dialect does not support sequences" ).

HIBERNATE FILES ASSOCIATED WITH CACHÉ DIALECT

The following files are associated with Caché dialect:

src\org\hibernate\dialect\Cache71Dialect.java
src\org\hibernate\dialect\function\ConditionalParenthesisFunction.java
src\org\hibernate\dialect\function\ConvertFunction.java
src\org\hibernate\exception\CacheSQLStateConverter.java
src\org\hibernate\sql\CacheJoinFragment.java

Cache71Dialect ships with Hibernate 3.2. All other dialects are distributed by InterSystems and subclass Cache71Dialect.

Field Summary

Fields
Modifier and Type Field and Description

static ViolatedConstraintNameExtracter EXTRACTER
The Cache ViolatedConstraintNameExtracter.
- 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

Fields
Modifier and Type	Field and Description
`static ViolatedConstraintNameExtracter`	`EXTRACTER` The Cache ViolatedConstraintNameExtracter.

Constructor Summary

Constructors
Constructor and Description

Cache71Dialect()
Creates new Cache71Dialect instance.

Constructors
Constructor and Description
`Cache71Dialect()` Creates new `Cache71Dialect` instance.

Method Summary

Methods
Modifier and Type	Method and Description
`boolean`	`areStringComparisonsCaseInsensitive()` Are string comparisons implicitly case insensitive.
`boolean`	`bindLimitParametersFirst()` Does the `LIMIT` clause come at the start of the `SELECT` statement, rather than at the end?
`SQLExceptionConversionDelegate`	`buildSQLExceptionConversionDelegate()` Build an instance of a `SQLExceptionConversionDelegate` for interpreting dialect-specific error or SQLState codes.
`protected void`	`commonRegistration()`
`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?
`boolean`	`dropTemporaryTableAfterUse()` Do we need to drop the temporary table after use?
`String`	`generateTemporaryTableName(String baseTableName)` Generate a temporary table name given the base 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`	`getCascadeConstraintsString()` Completely optional cascading drop clause
`String`	`getCreateTemporaryTablePostfix()` Get any fragments needing to be postfixed to the command for temporary table creation.
`String`	`getCreateTemporaryTableString()` Command used to create a temporary table.
`String`	`getIdentityColumnString()` The syntax used during DDL to define a column as being an IDENTITY.
`String`	`getIdentitySelectString()` Get the select command to use to retrieve the last generated IDENTITY value.
`String`	`getLimitString(String sql, boolean hasOffset)` Apply s limit clause to the query.
`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.
`String`	`getLowercaseFunction()` The name of the SQL function that transforms a string to lowercase
`Class`	`getNativeIdentifierGeneratorClass()` The class (which implements `IdentifierGenerator`) which acts as this dialects native generation strategy.
`String`	`getNoColumnsInsertString()` The fragment used to insert a row without specifying any column values.
`String`	`getNullColumnString()` The keyword used to specify a nullable column.
`ResultSet`	`getResultSet(CallableStatement ps)` Given a callable statement previously processed by `Dialect.registerResultSetOutParameter(java.sql.CallableStatement, int)`, extract the `ResultSet` from the OUT parameter.
`ViolatedConstraintNameExtracter`	`getViolatedConstraintNameExtracter()`
`boolean`	`hasAlterTable()` Does this dialect support the `ALTER TABLE` syntax?
`boolean`	`hasDataTypeInIdentityColumn()` Whether this dialect have an Identity clause added to the data type or a completely separate identity data type
`boolean`	`hasSelfReferentialForeignKeyBug()` Does the database/driver have bug in deleting rows that refer to other rows being deleted in the same query?
`Boolean`	`performTemporaryTableDDLInIsolation()` Does the dialect require that temporary table DDL statements occur in isolation from other statements? This would be the case if the creation would cause any current transaction to get committed implicitly.
`boolean`	`qualifyIndexName()` Do we need to qualify index names with the schema name?
`protected void`	`register71Functions()`
`int`	`registerResultSetOutParameter(CallableStatement statement, int col)` Registers a parameter (either OUT, or the new REF_CURSOR param type available in Java 8) capable of returning `ResultSet` by position.
`boolean`	`supportsCascadeDelete()` Does this dialect support cascaded delete on foreign key definitions?
`boolean`	`supportsCheck()` Does this dialect support check constraints?
`boolean`	`supportsEmptyInList()` Does this dialect support empty IN lists? For example, is [where XYZ in ()] a supported construct?
`boolean`	`supportsIdentityColumns()` Does this dialect support identity column key generation?
`boolean`	`supportsLimit()` Does this dialect support some form of limiting query results via a SQL clause?
`boolean`	`supportsLimitOffset()` Does this dialect's LIMIT support (if any) additionally support specifying an offset?
`boolean`	`supportsOuterJoinForUpdate()` Does this dialect support `FOR UPDATE` in conjunction with outer joined rows?
`boolean`	`supportsResultSetPositionQueryMethodsOnForwardOnlyCursor()` Does this dialect support asking the result set its positioning information on forward only cursors.
`boolean`	`supportsSequences()` Does this dialect support sequences?
`boolean`	`supportsTemporaryTables()` Does this dialect support temporary tables?
`boolean`	`supportsVariableLimit()` Does this dialect support bind variables (i.e., prepared statement parameters) for its limit/offset?
`boolean`	`useMaxForLimit()` Does the `LIMIT` clause take a "maximum" row number instead of a total number of returned rows? This is easiest understood via an example.

Methods inherited from class org.hibernate.dialect.Dialect
appendIdentitySelectToInsert, appendLockHint, appendLockHint, applyLocksToSql, bindLimitParametersInReverseOrder, buildLimitHandler, buildSQLExceptionConverter, cast, cast, cast, closeQuote, contributeTypes, convertToFirstRowValue, createCaseFragment, defaultScrollMode, doesReadCommittedCauseWritersToBlockReaders, doesRepeatableReadCauseReadersToBlockWriters, forceLimitUsage, forceLobAsLastValue, forUpdateOfColumns, getAddColumnSuffixString, getAddPrimaryKeyConstraintString, getAddUniqueConstraintString, getCallableStatementSupport, getCaseInsensitiveLike, getCastTypeName, getColumnAliasExtractor, getColumnComment, getCreateMultisetTableString, getCreateSchemaCommand, getCreateSequenceString, getCreateSequenceString, getCreateSequenceStrings, getCreateSequenceStrings, getCreateTableString, getCrossJoinSeparator, getCurrentTimestampSelectString, getCurrentTimestampSQLFunctionName, getDefaultProperties, getDialect, getDialect, getDropForeignKeyString, getDropSchemaCommand, getDropSequenceString, getDropSequenceStrings, getDropTableString, getDropTemporaryTableString, getForUpdateNowaitString, getForUpdateNowaitString, getForUpdateSkipLockedString, getForUpdateSkipLockedString, getForUpdateString, getForUpdateString, getForUpdateString, getForUpdateString, getForUpdateString, getFunctions, getHibernateTypeName, getHibernateTypeName, getIdentityColumnString, getIdentityInsertString, getIdentitySelectString, getInExpressionCountLimit, getKeywords, getLimitString, getLobMergeStrategy, getMaxAliasLength, getNotExpression, getQueryHintString, getQuerySequencesString, getReadLockString, getResultSet, getResultSet, getSelectClauseNullString, getSelectGUIDString, getSelectSequenceNextValString, getSequenceNextValString, getSqlTypeDescriptorOverride, getTableComment, getTableTypeString, getTypeName, getTypeName, getUniqueDelegate, getWriteLockString, isCurrentTimestampSelectStringCallable, isLockTimeoutParameterized, openQuote, quote, registerColumnType, registerColumnType, registerFunction, registerHibernateType, registerHibernateType, registerKeyword, registerResultSetOutParameter, remapSqlTypeDescriptor, renderOrderByElement, replaceResultVariableInOrderByClauseWithPosition, requiresCastingOfParametersInSelectClause, requiresParensForTupleDistinctCounts, supportsBindAsCallableArgument, supportsCaseInsensitiveLike, supportsCircularCascadeDeleteConstraints, supportsColumnCheck, supportsCommentOn, supportsCurrentTimestampSelection, supportsExistsInSelect, supportsExpectedLobUsagePattern, supportsIfExistsAfterConstraintName, supportsIfExistsAfterTableName, supportsIfExistsBeforeConstraintName, supportsIfExistsBeforeTableName, supportsInsertSelectIdentity, supportsLobValueChangePropogation, supportsLockTimeouts, supportsNotNullUnique, supportsParametersInInsertSelect, supportsPooledSequences, supportsRowValueConstructorSyntax, supportsRowValueConstructorSyntaxInInList, supportsSubqueryOnMutatingTable, supportsSubselectAsInPredicateLHS, supportsTableCheck, supportsTupleCounts, supportsTupleDistinctCounts, supportsTuplesInSubqueries, supportsUnboundedLobLocatorMaterialization, supportsUnionAll, supportsUnique, supportsUniqueConstraintInCreateAlterTable, toBooleanValueString, toString, transformSelectString, useFollowOnLocking, useInputStreamToInsertBlob

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

- Field Detail
  - EXTRACTER
```
public static final ViolatedConstraintNameExtracter EXTRACTER
```
    The Cache ViolatedConstraintNameExtracter.
- Constructor Detail
  - Cache71Dialect
```
public Cache71Dialect()
```
    Creates new Cache71Dialect instance. Sets up the JDBC / Caché type mappings.
- Method Detail
  - commonRegistration
```
protected final void commonRegistration()
```
  - register71Functions
```
protected final void register71Functions()
```
  - hasAlterTable
```
public boolean hasAlterTable()
```
    Description copied from class: Dialect
    
    Does this dialect support the ALTER TABLE syntax?
    
    Overrides:
    
    hasAlterTable in class Dialect
    
    Returns:
    True if we support altering of tables; false otherwise.
  - qualifyIndexName
```
public boolean qualifyIndexName()
```
    Description copied from class: Dialect
    
    Do we need to qualify index names with the schema name?
    
    Overrides:
    
    qualifyIndexName in class Dialect
    
    Returns:
    boolean
  - 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
  - supportsCheck
```
public boolean supportsCheck()
```
    Does this dialect support check constraints?
    
    Returns:
    false (Cache does not support check constraints)
  - 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.
  - supportsCascadeDelete
```
public boolean supportsCascadeDelete()
```
    Description copied from class: Dialect
    
    Does this dialect support cascaded delete on foreign key definitions?
    
    Overrides:
    
    supportsCascadeDelete in class Dialect
    
    Returns:
    true indicates that the dialect does support cascaded delete on foreign keys.
  - hasSelfReferentialForeignKeyBug
```
public boolean hasSelfReferentialForeignKeyBug()
```
    Description copied from class: Dialect
    
    Does the database/driver have bug in deleting rows that refer to other rows being deleted in the same query?
    
    Overrides:
    
    hasSelfReferentialForeignKeyBug in class Dialect
    
    Returns:
    true if the database/driver has this bug
  - 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.
  - generateTemporaryTableName
```
public String generateTemporaryTableName(String baseTableName)
```
    Description copied from class: Dialect
    
    Generate a temporary table name given the base 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.
  - getCreateTemporaryTableString
```
public String getCreateTemporaryTableString()
```
    Description copied from class: Dialect
    
    Command used to create a temporary table.
    
    Overrides:
    
    getCreateTemporaryTableString in class Dialect
    
    Returns:
    The command used to create a temporary table.
  - performTemporaryTableDDLInIsolation
```
public Boolean performTemporaryTableDDLInIsolation()
```
    Description copied from class: Dialect
    Does the dialect require that temporary table DDL statements occur in isolation from other statements? This would be the case if the creation would cause any current transaction to get committed implicitly.
    JDBC defines a standard way to query for this information via the DatabaseMetaData.dataDefinitionCausesTransactionCommit() method. However, that does not distinguish between temporary table DDL and other forms of DDL; MySQL, for example, reports DDL causing a transaction commit via its driver, even though that is not the case for temporary table DDL.
    Possible return values and their meanings:
    - Boolean.TRUE - Unequivocally, perform the temporary table DDL in isolation.
    - Boolean.FALSE - Unequivocally, do not perform the temporary table DDL in isolation.
    - null - defer to the JDBC driver response in regards to DatabaseMetaData.dataDefinitionCausesTransactionCommit()
    Overrides:
    
    performTemporaryTableDDLInIsolation in class Dialect
    
    Returns:
    see the result matrix above.
  - 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.
  - dropTemporaryTableAfterUse
```
public boolean dropTemporaryTableAfterUse()
```
    Description copied from class: Dialect
    
    Do we need to drop the temporary table after use?
    
    Overrides:
    
    dropTemporaryTableAfterUse in class Dialect
    
    Returns:
    True if the table should be dropped.
  - supportsIdentityColumns
```
public boolean supportsIdentityColumns()
```
    Description copied from class: Dialect
    
    Does this dialect support identity column key generation?
    
    Overrides:
    
    supportsIdentityColumns in class Dialect
    
    Returns:
    True if IDENTITY columns are supported; false otherwise.
  - getNativeIdentifierGeneratorClass
```
public Class getNativeIdentifierGeneratorClass()
```
    Description copied from class: Dialect
    
    The class (which implements IdentifierGenerator) which acts as this dialects native generation strategy.
    Comes into play whenever the user specifies the native generator.
    
    Overrides:
    
    getNativeIdentifierGeneratorClass in class Dialect
    
    Returns:
    The native generator class.
  - hasDataTypeInIdentityColumn
```
public boolean hasDataTypeInIdentityColumn()
```
    Description copied from class: Dialect
    
    Whether this dialect have an Identity clause added to the data type or a completely separate identity data type
    
    Overrides:
    
    hasDataTypeInIdentityColumn in class Dialect
    
    Returns:
    boolean
  - getIdentityColumnString
```
public String getIdentityColumnString()
                               throws MappingException
```
    Description copied from class: Dialect
    
    The syntax used during DDL to define a column as being an IDENTITY.
    
    Overrides:
    
    getIdentityColumnString in class Dialect
    
    Returns:
    The appropriate DDL fragment.
    
    Throws:
    
    MappingException - If IDENTITY generation is not supported.
  - getIdentitySelectString
```
public String getIdentitySelectString()
```
    Description copied from class: Dialect
    
    Get the select command to use to retrieve the last generated IDENTITY value.
    
    Overrides:
    
    getIdentitySelectString in class Dialect
    
    Returns:
    The appropriate select command
  - 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.
  - supportsOuterJoinForUpdate
```
public boolean supportsOuterJoinForUpdate()
```
    Description copied from class: Dialect
    
    Does this dialect support FOR UPDATE in conjunction with outer joined rows?
    
    Overrides:
    
    supportsOuterJoinForUpdate in class Dialect
    
    Returns:
    True if outer joined rows can be locked via FOR UPDATE.
  - 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.
  - 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.
  - supportsLimitOffset
```
public boolean supportsLimitOffset()
```
    Description copied from class: Dialect
    
    Does this dialect's LIMIT support (if any) additionally support specifying an offset?
    
    Overrides:
    
    supportsLimitOffset in class Dialect
    
    Returns:
    True if the dialect supports an offset within the limit support.
  - supportsVariableLimit
```
public boolean supportsVariableLimit()
```
    Description copied from class: Dialect
    
    Does this dialect support bind variables (i.e., prepared statement parameters) for its limit/offset?
    
    Overrides:
    
    supportsVariableLimit in class Dialect
    
    Returns:
    True if bind variables can be used; false otherwise.
  - 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
  - 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?
    This is easiest understood via an example. Consider you have a table with 20 rows, but you only want to retrieve rows number 11 through 20. Generally, a limit with offset would say that the offset = 11 and the limit = 10 (we only want 10 rows at a time); this is specifying the total number of returned rows. Some dialects require that we instead specify offset = 11 and limit = 20, where 20 is the "last" row we want relative to offset (i.e. total number of rows = 20 - 11 = 9)
    So essentially, is limit relative from offset? Or is limit absolute?
    
    Overrides:
    
    useMaxForLimit in class Dialect
    
    Returns:
    True if limit is relative from offset; false otherwise.
  - 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 clauses 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
  - registerResultSetOutParameter
```
public int registerResultSetOutParameter(CallableStatement statement,
                                int col)
                                  throws SQLException
```
    Description copied from class: Dialect
    
    Registers a parameter (either OUT, or the new REF_CURSOR param type available in Java 8) capable of returning ResultSet *by position*. Pre-Java 8, registering such ResultSet-returning parameters varied greatly across database and drivers; hence its inclusion as part of the Dialect contract.
    
    Overrides:
    
    registerResultSetOutParameter in class Dialect
    
    Parameters:
    statement - The callable statement.
    col - The bind position at which to register the output param.
    
    Returns:
    The number of (contiguous) bind positions used.
    
    Throws:
    
    SQLException - Indicates problems registering the param.
  - getResultSet
```
public ResultSet getResultSet(CallableStatement ps)
                       throws SQLException
```
    Description copied from class: Dialect
    
    Given a callable statement previously processed by Dialect.registerResultSetOutParameter(java.sql.CallableStatement, int), extract the ResultSet from the OUT parameter.
    
    Overrides:
    
    getResultSet in class Dialect
    
    Parameters:
    ps - The callable statement.
    
    Returns:
    The extracted result set.
    
    Throws:
    
    SQLException - Indicates problems extracting the result set.
  - getLowercaseFunction
```
public String getLowercaseFunction()
```
    Description copied from class: Dialect
    
    The name of the SQL function that transforms a string to lowercase
    
    Overrides:
    
    getLowercaseFunction in class Dialect
    
    Returns:
    The dialect-specific lowercase function.
  - getNullColumnString
```
public String getNullColumnString()
```
    Description copied from class: Dialect
    
    The keyword used to specify a nullable column.
    
    Overrides:
    
    getNullColumnString in class Dialect
    
    Returns:
    String
  - 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.
  - getNoColumnsInsertString
```
public String getNoColumnsInsertString()
```
    Description copied from class: Dialect
    
    The fragment used to insert a row without specifying any column values. This is not possible on some databases.
    
    Overrides:
    
    getNoColumnsInsertString in class Dialect
    
    Returns:
    The appropriate empty values clause.
  - buildSQLExceptionConversionDelegate
```
public SQLExceptionConversionDelegate buildSQLExceptionConversionDelegate()
```
    Description copied from class: Dialect
    Build an instance of a SQLExceptionConversionDelegate for interpreting dialect-specific error or SQLState codes.
    When Dialect.buildSQLExceptionConverter() returns null, the default SQLExceptionConverter is used to interpret SQLState and error codes. If this method is overridden to return a non-null value, the default SQLExceptionConverter will use the returned SQLExceptionConversionDelegate in addition to the following standard delegates:
    1. a "static" delegate based on the JDBC 4 defined SQLException hierarchy;
    2. a delegate that interprets SQLState codes for either X/Open or SQL-2003 codes, depending on java.sql.DatabaseMetaData#getSQLStateType
    It is strongly recommended that specific Dialect implementations override this method, since interpretation of a SQL error is much more accurate when based on the a vendor-specific ErrorCode rather than the SQLState.
    Specific Dialects may override to return whatever is most appropriate for that vendor.
    Overrides:
    
    buildSQLExceptionConversionDelegate in class Dialect
    
    Returns:
    The SQLExceptionConversionDelegate for this dialect
  - getViolatedConstraintNameExtracter
```
public ViolatedConstraintNameExtracter getViolatedConstraintNameExtracter()
```
    Specified by:
    
    getViolatedConstraintNameExtracter in interface ConversionContext
    
    Overrides:
    
    getViolatedConstraintNameExtracter in class Dialect
  - supportsEmptyInList
```
public boolean supportsEmptyInList()
```
    Description copied from class: Dialect
    
    Does this dialect support empty IN lists?
    For example, is [where XYZ in ()] a supported construct?
    
    Overrides:
    
    supportsEmptyInList in class Dialect
    
    Returns:
    True if empty in lists are supported; false otherwise.
  - areStringComparisonsCaseInsensitive
```
public boolean areStringComparisonsCaseInsensitive()
```
    Description copied from class: Dialect
    
    Are string comparisons implicitly case insensitive.
    In other words, does [where 'XYZ' = 'xyz'] resolve to true?
    
    Overrides:
    
    areStringComparisonsCaseInsensitive in class Dialect
    
    Returns:
    True if comparisons are case insensitive.
  - supportsResultSetPositionQueryMethodsOnForwardOnlyCursor
```
public boolean supportsResultSetPositionQueryMethodsOnForwardOnlyCursor()
```
    Description copied from class: Dialect
    
    Does this dialect support asking the result set its positioning information on forward only cursors. Specifically, in the case of scrolling fetches, Hibernate needs to use ResultSet.isAfterLast() and ResultSet.isBeforeFirst(). Certain drivers do not allow access to these methods for forward only cursors.
    NOTE : this is highly driver dependent!
    
    Overrides:
    
    supportsResultSetPositionQueryMethodsOnForwardOnlyCursor in class Dialect
    
    Returns:
    True if methods like ResultSet.isAfterLast() and ResultSet.isBeforeFirst() are supported for forward only cursors; false otherwise.

Class Cache71Dialect

PREREQUISITES

HIBERNATE DIRECTORIES AND FILES

CACHÉ DOCUMENTATION

HIBERNATE DOCUMENTATION

TO SET UP HIBERNATE FOR USE WITH CACHÉ

CACHÉ VERSION URL

CACHÉ DIALECTS

SUPPORT FOR IDENTITY COLUMNS

SEQUENCE DIALECTS SUPPORT SEQUENCES

HIBERNATE FILES ASSOCIATED WITH CACHÉ DIALECT

Field Summary

Fields inherited from class org.hibernate.dialect.Dialect

Constructor Summary

Method Summary

Methods inherited from class org.hibernate.dialect.Dialect

Methods inherited from class java.lang.Object

Field Detail

EXTRACTER

Constructor Detail

Cache71Dialect

Method Detail

commonRegistration

register71Functions

hasAlterTable

qualifyIndexName

getAddForeignKeyConstraintString

supportsCheck

getAddColumnString

getCascadeConstraintsString

dropConstraints

supportsCascadeDelete

hasSelfReferentialForeignKeyBug

supportsTemporaryTables

generateTemporaryTableName

getCreateTemporaryTableString

performTemporaryTableDDLInIsolation

getCreateTemporaryTablePostfix

dropTemporaryTableAfterUse

supportsIdentityColumns

getNativeIdentifierGeneratorClass

hasDataTypeInIdentityColumn

getIdentityColumnString

getIdentitySelectString

supportsSequences

supportsOuterJoinForUpdate

getLockingStrategy

supportsLimit

supportsLimitOffset

supportsVariableLimit

bindLimitParametersFirst

useMaxForLimit

getLimitString

registerResultSetOutParameter

getResultSet

getLowercaseFunction

getNullColumnString

createOuterJoinFragment

getNoColumnsInsertString

buildSQLExceptionConversionDelegate

getViolatedConstraintNameExtracter

supportsEmptyInList

areStringComparisonsCaseInsensitive

supportsResultSetPositionQueryMethodsOnForwardOnlyCursor