Overview | Package | Class | Use | Tree | Deprecated | Index | Help
PREV CLASS NEXT CLASS | FRAMES NO FRAMES
SUMMARY: NESTED | FIELD | CONSTR | METHOD | DETAIL: FIELD | CONSTR | METHOD

## org.apache.cayenne.access.trans
Class UpdateTranslator

    java.lang.Object
      org.apache.cayenne.access.QueryTranslator
          org.apache.cayenne.access.trans.QueryAssembler
              org.apache.cayenne.access.trans.UpdateTranslator

    public class UpdateTranslator

extends QueryAssembler

Class implements default translation mechanism of org.apache.cayenne.query.UpdateQuery objects to SQL UPDATE statements.

Author:
  Andrus Adamchik

Field Summary

Fields inherited from class org.apache.cayenne.access.trans.QueryAssembler
`attributes, values`

Fields inherited from class org.apache.cayenne.access.QueryTranslator
`adapter, connection, entityResolver, query`

Constructor Summary
`UpdateTranslator()`

Method Summary
`String` | `aliasForTable(DbEntity dbEnt)` Returns a name that can be used as column alias.
`String` | `createSqlString()` Method that converts an update query into SQL string
`void` | `dbRelationshipAdded(DbRelationship dbRel)` Processes a join being added.

Methods inherited from class org.apache.cayenne.access.trans.QueryAssembler
`addToParamList, aliasForTable, createStatement, initStatement, supportsTableAliases`

Methods inherited from class org.apache.cayenne.access.QueryTranslator
`getAdapter, getConnection, getEntityResolver, getQuery, getRootDbEntity, getRootEntity, getRootInheritanceTree, setAdapter, setConnection, setEntityResolver, setQuery`

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

Constructor Detail

### UpdateTranslator

    public UpdateTranslator()

Method Detail

### aliasForTable

    public String aliasForTable(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`

### dbRelationshipAdded

    public void dbRelationshipAdded(DbRelationship dbRel)

  Description copied from class: `QueryAssembler`
  Processes a join being added.

  Specified by:
    `dbRelationshipAdded` in class `QueryAssembler`

### createSqlString

    public String createSqlString()
                           throws Exception

  Method that converts an update query into SQL string

  Specified by:
    `createSqlString` in class `QueryAssembler`
  Throws:
    `Exception`

Overview | Package | Class | Use | Tree | Deprecated | Index | Help
PREV CLASS NEXT CLASS | FRAMES NO FRAMES
SUMMARY: NESTED | FIELD | CONSTR | METHOD | DETAIL: FIELD | CONSTR | METHOD

Copyright © 2001-2008 Apache Cayenne. All Rights Reserved.