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org.objectstyle.cayenne.access.trans
Class SqlSelectTranslator  

java.lang.Object
  org.objectstyle.cayenne.access.QueryTranslator
      org.objectstyle.cayenne.access.trans.QueryAssembler
          org.objectstyle.cayenne.access.trans.SqlSelectTranslator

All Implemented Interfaces:

SelectQueryTranslator

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public class SqlSelectTranslator

extends QueryAssembler

implements SelectQueryTranslator

Class works as a translator of raw SELECT queries to JDBC statements.

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Field Summary
private static org.apache.log4j.Logger	logObj

 

Fields inherited from class org.objectstyle.cayenne.access.trans.QueryAssembler

attributes, values

 

Fields inherited from class org.objectstyle.cayenne.access.QueryTranslator

adapter, con, engine, query

 

Constructor Summary

SqlSelectTranslator()

 

Method Summary
java.lang.String	aliasForTable(org.objectstyle.cayenne.map.DbEntity dbEnt)           Returns a name that can be used as column alias.
static void	appendResultTypesFromMetadata(java.sql.ResultSet rs, org.objectstyle.cayenne.access.util.ResultDescriptor desc)           Initializes the types of columns in ResultDescriptor from the ResultSet metadata.
static void	appendSnapshotLabelsFromMetadata(java.sql.ResultSet rs, org.objectstyle.cayenne.access.util.ResultDescriptor descriptor)           Initializes the names of columns in ResultDescriptor from the ResultSet metadata.
java.lang.String	createSqlString()           Translates query into sql string.
void	dbRelationshipAdded(org.objectstyle.cayenne.map.DbRelationship dbRel)           Processes a join being added.
private  org.objectstyle.cayenne.query.SqlSelectQuery	getRawQuery()
org.objectstyle.cayenne.access.util.ResultDescriptor	getResultDescriptor(java.sql.ResultSet rs)           Returns a descriptor that contains information needed for the ResultSet processing.
boolean	supportsTableAliases()           Returns true if table aliases are supported.

 

Methods inherited from class org.objectstyle.cayenne.access.trans.QueryAssembler

addToParamList, aliasForTable, createStatement, initStatement

 

Methods inherited from class org.objectstyle.cayenne.access.QueryTranslator

getAdapter, getCon, getEngine, getQuery, getRootDbEntity, getRootEntity, setAdapter, setCon, setEngine, setQuery

 

Methods inherited from class java.lang.Object

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

 

Field Detail

logObj

private static org.apache.log4j.Logger logObj

Constructor Detail

SqlSelectTranslator

public SqlSelectTranslator()

Method Detail

appendResultTypesFromMetadata

public static void appendResultTypesFromMetadata(java.sql.ResultSet rs,
                                                 org.objectstyle.cayenne.access.util.ResultDescriptor desc)

Initializes the types of columns in ResultDescriptor from the ResultSet metadata.

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appendSnapshotLabelsFromMetadata

public static void appendSnapshotLabelsFromMetadata(java.sql.ResultSet rs,
                                                    org.objectstyle.cayenne.access.util.ResultDescriptor descriptor)

Initializes the names of columns in ResultDescriptor from the ResultSet metadata.

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aliasForTable

public java.lang.String aliasForTable(org.objectstyle.cayenne.map.DbEntity dbEnt)

Description copied from class: QueryAssembler

Returns a name that can be used as column alias. This can be one of the following:

• an alias for this table, if it uses aliases
• a fully qualified table name, if not.

CayenneRuntimeException is thrown if a table alias can not be created.

Specified by:

aliasForTable in class QueryAssembler

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createSqlString

public java.lang.String createSqlString()
                                 throws java.lang.Exception

Description copied from class: QueryAssembler

Translates query into sql string. This is a workhorse method of QueryAssembler. It is called internally from createStatement. Usually there is no need to invoke it explicitly.

Specified by:

createSqlString in class QueryAssembler

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dbRelationshipAdded

public void dbRelationshipAdded(org.objectstyle.cayenne.map.DbRelationship dbRel)

Description copied from class: QueryAssembler

Processes a join being added.

Specified by:

dbRelationshipAdded in class QueryAssembler

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getRawQuery

private org.objectstyle.cayenne.query.SqlSelectQuery getRawQuery()

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getResultDescriptor

public org.objectstyle.cayenne.access.util.ResultDescriptor getResultDescriptor(java.sql.ResultSet rs)

Description copied from interface: SelectQueryTranslator

Returns a descriptor that contains information needed for the ResultSet processing.

Specified by:

getResultDescriptor in interface SelectQueryTranslator

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supportsTableAliases

public boolean supportsTableAliases()

Description copied from class: QueryAssembler

Returns true if table aliases are supported. Default implementation returns false.

Overrides:

supportsTableAliases in class QueryAssembler

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Home >> All >> org >> objectstyle >> cayenne >> access >> [ trans overview ]	PREV CLASS  NEXT CLASS
SUMMARY:  JAVADOC |  SOURCE |  DOWNLOAD | NESTED | FIELD | CONSTR | METHOD	DETAIL: FIELD | CONSTR | METHOD

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