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org.objectstyle.cayenne.dba
Class JdbcAdapter  

java.lang.Object
  org.objectstyle.cayenne.dba.JdbcAdapter

All Implemented Interfaces:

DbAdapter

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public class JdbcAdapter

extends java.lang.Object

implements DbAdapter

A generic DbAdapter implementation. Can be used as a default adapter or as a superclass of a concrete adapter implementation.

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Field Summary
protected  org.objectstyle.cayenne.access.types.ExtendedTypeMap	extendedTypes
protected  PkGenerator	pkGenerator
protected  boolean	supportsBatchUpdates
protected  TypesHandler	typesHandler

 

Fields inherited from interface org.objectstyle.cayenne.dba.DbAdapter

availableAdapterClassNames, DB2, FIREBIRD, HSQLDB, JDBC, MYSQL, ORACLE, POSTGRES, SYBASE

 

Constructor Summary

JdbcAdapter()

 

Method Summary
void	bindParameter(java.sql.PreparedStatement statement, java.lang.Object object, int pos, int sqlType, int precision)           Binds an object value to PreparedStatement's numbered parameter.
org.objectstyle.cayenne.map.DbAttribute	buildAttribute(java.lang.String name, java.lang.String typeName, int type, int size, int precision, boolean allowNulls)           Creates and returns a DbAttribute based on supplied parameters (usually obtained from database meta data).
protected  void	configureExtendedTypes(org.objectstyle.cayenne.access.types.ExtendedTypeMap map)           Installs appropriate ExtendedTypes as converters for passing values between JDBC and Java layers.
org.objectstyle.cayenne.access.DataNode	createDataNode(java.lang.String name)           Creates an instance of DataNode class.
java.lang.String	createFkConstraint(org.objectstyle.cayenne.map.DbRelationship rel)           Returns a SQL string that can be used to create a foreign key constraint for the relationship.
protected  PkGenerator	createPkGenerator()           Creates and returns a primary key generator.
java.lang.String	createTable(org.objectstyle.cayenne.map.DbEntity ent)           Returns a SQL string that can be used to create database table corresponding to ent parameter.
java.lang.String	dropTable(org.objectstyle.cayenne.map.DbEntity ent)           Returns a SQL string to drop a table corresponding to ent DbEntity.
java.lang.String[]	externalTypesForJdbcType(int type)           Returns an array of RDBMS types that can be used with JDBC type.
org.objectstyle.cayenne.access.types.ExtendedTypeMap	getExtendedTypes()           Returns a map of ExtendedTypes that is used to translate values between Java and JDBC layer.
PkGenerator	getPkGenerator()           Returns primary key generator associated with this DbAdapter.
org.objectstyle.cayenne.access.trans.QualifierTranslator	getQualifierTranslator(org.objectstyle.cayenne.access.trans.QueryAssembler queryAssembler)           Creates and returns a default implementation of a qualifier translator.
org.objectstyle.cayenne.access.QueryTranslator	getQueryTranslator(org.objectstyle.cayenne.query.Query query)           Creates and returns a QueryTranslator appropriate for the specified query parameter.
protected  java.lang.Class	queryTranslatorClass(org.objectstyle.cayenne.query.Query q)           Returns a class of the query translator that should be used to translate the query q to SQL.
void	setSupportsBatchUpdates(boolean flag)
boolean	shouldRunBatchQuery(org.objectstyle.cayenne.access.DataNode node, java.sql.Connection con, org.objectstyle.cayenne.query.BatchQuery query, org.objectstyle.cayenne.access.OperationObserver delegate)           Always returns true, letting DataNode to handle the query.
boolean	supportsBatchUpdates()           Returns true if the target database supports batch updates.
boolean	supportsFkConstraints()           Returns true.
java.lang.String	tableTypeForTable()           Returns the name of the table type (as returned by DatabaseMetaData.getTableTypes) for a simple user table.
java.lang.String	tableTypeForView()           Returns the name of the table type (as returned by DatabaseMetaData.getTableTypes) for a view table.

 

Methods inherited from class java.lang.Object

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

 

Field Detail

pkGenerator

protected PkGenerator pkGenerator

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typesHandler

protected TypesHandler typesHandler

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extendedTypes

protected org.objectstyle.cayenne.access.types.ExtendedTypeMap extendedTypes

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supportsBatchUpdates

protected boolean supportsBatchUpdates

Constructor Detail

JdbcAdapter

public JdbcAdapter()

Method Detail

configureExtendedTypes

protected void configureExtendedTypes(org.objectstyle.cayenne.access.types.ExtendedTypeMap map)

Installs appropriate ExtendedTypes as converters for passing values between JDBC and Java layers. Called from default constructor.

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createPkGenerator

protected PkGenerator createPkGenerator()

Creates and returns a primary key generator. This factory method should be overriden by JdbcAdapter subclasses to provide custom implementations of PKGenerator.

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getPkGenerator

public PkGenerator getPkGenerator()

Returns primary key generator associated with this DbAdapter.

Specified by:

getPkGenerator in interface DbAdapter

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getQueryTranslator

public org.objectstyle.cayenne.access.QueryTranslator getQueryTranslator(org.objectstyle.cayenne.query.Query query)
                                                                  throws java.lang.Exception

Description copied from interface: DbAdapter

Creates and returns a QueryTranslator appropriate for the specified query parameter. Sets translator "query" and "adapter" property.

This factory method allows subclasses to specify their own translators that implement vendor-specific optimizations.

Specified by:

getQueryTranslator in interface DbAdapter

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queryTranslatorClass

protected java.lang.Class queryTranslatorClass(org.objectstyle.cayenne.query.Query q)

Returns a class of the query translator that should be used to translate the query q to SQL. Exists mainly for the benefit of subclasses that can override this method providing their own translator.

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supportsFkConstraints

public boolean supportsFkConstraints()

Returns true.

Specified by:

supportsFkConstraints in interface DbAdapter

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dropTable

public java.lang.String dropTable(org.objectstyle.cayenne.map.DbEntity ent)

Returns a SQL string to drop a table corresponding to ent DbEntity.

Specified by:

dropTable in interface DbAdapter

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createTable

public java.lang.String createTable(org.objectstyle.cayenne.map.DbEntity ent)

Returns a SQL string that can be used to create database table corresponding to ent parameter.

Specified by:

createTable in interface DbAdapter

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createFkConstraint

public java.lang.String createFkConstraint(org.objectstyle.cayenne.map.DbRelationship rel)

Returns a SQL string that can be used to create a foreign key constraint for the relationship.

Specified by:

createFkConstraint in interface DbAdapter

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externalTypesForJdbcType

public java.lang.String[] externalTypesForJdbcType(int type)

Description copied from interface: DbAdapter

Returns an array of RDBMS types that can be used with JDBC type. Valid types are defined in java.sql.Types.

Specified by:

externalTypesForJdbcType in interface DbAdapter

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getExtendedTypes

public org.objectstyle.cayenne.access.types.ExtendedTypeMap getExtendedTypes()

Description copied from interface: DbAdapter

Returns a map of ExtendedTypes that is used to translate values between Java and JDBC layer.

Specified by:

getExtendedTypes in interface DbAdapter

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buildAttribute

public org.objectstyle.cayenne.map.DbAttribute buildAttribute(java.lang.String name,
                                                              java.lang.String typeName,
                                                              int type,
                                                              int size,
                                                              int precision,
                                                              boolean allowNulls)

Description copied from interface: DbAdapter

Creates and returns a DbAttribute based on supplied parameters (usually obtained from database meta data).

Specified by:

buildAttribute in interface DbAdapter

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tableTypeForTable

public java.lang.String tableTypeForTable()

Description copied from interface: DbAdapter

Returns the name of the table type (as returned by DatabaseMetaData.getTableTypes) for a simple user table.

Specified by:

tableTypeForTable in interface DbAdapter

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tableTypeForView

public java.lang.String tableTypeForView()

Description copied from interface: DbAdapter

Returns the name of the table type (as returned by DatabaseMetaData.getTableTypes) for a view table.

Specified by:

tableTypeForView in interface DbAdapter

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getQualifierTranslator

public org.objectstyle.cayenne.access.trans.QualifierTranslator getQualifierTranslator(org.objectstyle.cayenne.access.trans.QueryAssembler queryAssembler)

Creates and returns a default implementation of a qualifier translator.

Specified by:

getQualifierTranslator in interface DbAdapter

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createDataNode

public org.objectstyle.cayenne.access.DataNode createDataNode(java.lang.String name)

Creates an instance of DataNode class.

Specified by:

createDataNode in interface DbAdapter

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bindParameter

public void bindParameter(java.sql.PreparedStatement statement,
                          java.lang.Object object,
                          int pos,
                          int sqlType,
                          int precision)
                   throws java.sql.SQLException,
                          java.lang.Exception

Description copied from interface: DbAdapter

Binds an object value to PreparedStatement's numbered parameter.

Specified by:

bindParameter in interface DbAdapter

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supportsBatchUpdates

public boolean supportsBatchUpdates()

Description copied from interface: DbAdapter

Returns true if the target database supports batch updates.

Specified by:

supportsBatchUpdates in interface DbAdapter

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setSupportsBatchUpdates

public void setSupportsBatchUpdates(boolean flag)

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shouldRunBatchQuery

public boolean shouldRunBatchQuery(org.objectstyle.cayenne.access.DataNode node,
                                   java.sql.Connection con,
                                   org.objectstyle.cayenne.query.BatchQuery query,
                                   org.objectstyle.cayenne.access.OperationObserver delegate)
                            throws java.sql.SQLException,
                                   java.lang.Exception

Always returns true, letting DataNode to handle the query.

Specified by:

shouldRunBatchQuery in interface DbAdapter

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Overview  Package   Class  Use  Deprecated  Index
Home >> All >> org >> objectstyle >> cayenne >> [ dba overview ]	PREV CLASS  NEXT CLASS
SUMMARY:  JAVADOC |  SOURCE |  DOWNLOAD | NESTED | FIELD | CONSTR | METHOD	DETAIL: FIELD | CONSTR | METHOD

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