Package org.apache.empire.db

Class DBCommandExpr.DBCmdQuery

java.lang.Object

org.apache.empire.db.DBObject

org.apache.empire.db.DBExpr

org.apache.empire.db.DBRowSet

org.apache.empire.db.DBCommandExpr.DBCmdQuery

All Implemented Interfaces:

Entity

Enclosing class:

DBCommandExpr

protected static class DBCommandExpr.DBCmdQuery
extends DBRowSet

Nested Class Summary

Nested classes/interfaces inherited from class org.apache.empire.db.DBRowSet

DBRowSet.FieldInitMode, DBRowSet.PartialMode

Field Summary

Fields inherited from class org.apache.empire.db.DBRowSet

attributes, beanType, columnReferences, columns, comment, db, entityName, log, timestampColumn

Fields inherited from class org.apache.empire.db.DBExpr

CTX_ALIAS, CTX_ALL, CTX_DEFAULT, CTX_FULLNAME, CTX_NAME, CTX_NOPARENTHESIS, CTX_VALUE

Constructor Summary

Constructors

Constructor	Description
DBCmdQuery(DBCommandExpr cmd, DBDatabase db, DBColumnExpr[] exprList)	Creates a new DBCmdQueryObject

Method Summary

Modifier and Type	Method	Description
void	addReferencedColumns(Set<DBColumn> list)	Internal function to obtain all DBColumnExpr-objects used by this expression.
void	addSQL(DBSQLBuilder sql, long context)	Creates the SQL-Command adds the select statement into the SQL-Command.
protected DBColumn	cloneColumn(DBRowSet clone, DBColumn scourceColumn)	throws ERR_NOTSUPPORTED
void	createRecord(DBRecordBase record, Object[] initalKey, boolean deferredInit)	throws ERR_NOTSUPPORTED
void	deleteRecord(Object[] key, DBContext context)	throws ERR_NOTSUPPORTED
String	getAlias()	Not applicable - returns null
DBColumn[]	getKeyColumns()	Prints the error message: ERR_NOTSUPPORTED.
String	getName()	Not applicable - returns null
boolean	isUpdateable()	Not applicable - returns false
void	readRecord(DBRecordBase record, DBCompareExpr whereConstraints)	throws ERR_NOTSUPPORTED
void	updateRecord(DBRecordBase rec)	throws ERR_NOTSUPPORTED

Methods inherited from class org.apache.empire.db.DBRowSet

addColumnReference, checkParamRecord, completeInitRecord, count, createRecordCommand, deleteAllReferences, deleteRecord, deleteReferenceRecords, equals, getAllColumns, getAttribute, getAttributes, getBeanType, getColumn, getColumn, getColumnCount, getColumnExprAt, getColumnIndex, getColumnIndex, getColumnReferences, getColumns, getComment, getDatabase, getEntityName, getFullName, getIdentifier, getKeyConstraints, getRenameTablePhrase, getRowsetData, getTimestampColumn, hashCode, initClonedFields, initRecord, initRecord, initRecord, initRecordDefaultValues, isColumnReadOnly, isKeyColumn, isSame, key, on, on, prepareInitRecord, readRecord, readRecord, recordExists, recordExists, setAttribute, setBeanType, setBeanType, setComment, setEntityName, setRowsetData, setTimestampColumn

Methods inherited from class org.apache.empire.db.DBObject

checkParamNull

Methods inherited from class java.lang.Object

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

Constructor Details

DBCmdQuery

public DBCmdQuery(DBCommandExpr cmd,
 DBDatabase db,
 DBColumnExpr[] exprList)

Creates a new DBCmdQueryObject

Parameters:

cmd - the command expression

db - the database to which the query belongs

exprList - the column expressions

Method Details

getName

public String getName()

Not applicable - returns null

Specified by:

getName in class DBRowSet

getAlias

public String getAlias()

Not applicable - returns null

Specified by:

getAlias in class DBRowSet

isUpdateable

public boolean isUpdateable()

Not applicable - returns false

Specified by:

isUpdateable in class DBRowSet

addReferencedColumns

public void addReferencedColumns(Set<DBColumn> list)

Description copied from class: DBExpr

Internal function to obtain all DBColumnExpr-objects used by this expression.

Overrides:

addReferencedColumns in class DBRowSet

Parameters:

list - list to which all used column expressions must be added

See Also:

• DBExpr.addReferencedColumns(Set)

addSQL

public void addSQL(DBSQLBuilder sql,
 long context)

Creates the SQL-Command adds the select statement into the SQL-Command.

Specified by:

addSQL in class DBExpr

Parameters:

sql - the SQL-Command

context - the current SQL-Command context

getKeyColumns

public DBColumn[] getKeyColumns()

Prints the error message: ERR_NOTSUPPORTED.

Specified by:

getKeyColumns in interface Entity

Specified by:

getKeyColumns in class DBRowSet

Returns:

null

createRecord

public void createRecord(DBRecordBase record,
 Object[] initalKey,
 boolean deferredInit)

throws ERR_NOTSUPPORTED

Specified by:

createRecord in class DBRowSet

readRecord

public void readRecord(DBRecordBase record,
 DBCompareExpr whereConstraints)

throws ERR_NOTSUPPORTED

Overrides:

readRecord in class DBRowSet

Parameters:

record - the DBRecord object which will hold the record data

whereConstraints - the constraint for querying the record

updateRecord

public void updateRecord(DBRecordBase rec)

throws ERR_NOTSUPPORTED

Overrides:

updateRecord in class DBRowSet

Parameters:

rec - the DBRecord object. contains all fields and the field properties

deleteRecord

public void deleteRecord(Object[] key,
 DBContext context)

throws ERR_NOTSUPPORTED

Specified by:

deleteRecord in class DBRowSet

cloneColumn

protected DBColumn cloneColumn(DBRowSet clone,
 DBColumn scourceColumn)

throws ERR_NOTSUPPORTED

Specified by:

cloneColumn in class DBRowSet

Parameters:

clone - the cloned rowset

scourceColumn - the source column

Returns:

the cloned column