org.apache.empire.dbms.postgresql

Class PostgresAtAt

java.lang.Object

org.apache.empire.db.DBObject

org.apache.empire.db.DBExpr

org.apache.empire.db.expr.compare.DBCompareExpr

org.apache.empire.dbms.postgresql.PostgresAtAt

public class PostgresAtAt
extends DBCompareExpr

PostgresAtAt create a Postgres @@ comparator

Field Summary

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

CTX_ALIAS, CTX_ALL, CTX_DEFAULT, CTX_FULLNAME, CTX_NAME, CTX_NOPARENTHESES, CTX_VALUE

Constructor Summary

Constructors

Constructor and Description
PostgresAtAt(DBColumnExpr left, DBColumnExpr right)

Method Summary

Modifier and Type	Method and Description
void	addReferencedColumns(Set<DBColumn> list) Internal function to obtain all DBColumnExpr-objects used by this expression.
void	addSQL(StringBuilder buf, long context) Used to build the SQL command.
DBCompareExpr	copy(DBCommand newCmd) internally used for command cloning
DBDatabase	getDatabase() Returns the database object to which this object belongs to.
boolean	isMutuallyExclusive(DBCompareExpr other)
void	prepareCommand(DBCommand cmd) internally used for preapred statement generation

Methods inherited from class org.apache.empire.db.expr.compare.DBCompareExpr

and, not, or

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

getObjectValue

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

checkParamNull

Methods inherited from class java.lang.Object

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

Constructor Detail

PostgresAtAt

public PostgresAtAt(DBColumnExpr left,
                    DBColumnExpr right)

Method Detail

getDatabase

public DBDatabase getDatabase()

Description copied from class: DBObject

Returns the database object to which this object belongs to. For the database object itself this function will return the this pointer.

Specified by:

getDatabase in class DBObject

Returns:

the database object

prepareCommand

public void prepareCommand(DBCommand cmd)

Description copied from class: DBCompareExpr

internally used for preapred statement generation

Specified by:

prepareCommand in class DBCompareExpr

copy

public DBCompareExpr copy(DBCommand newCmd)

Description copied from class: DBCompareExpr

internally used for command cloning

Specified by:

copy in class DBCompareExpr

isMutuallyExclusive

public boolean isMutuallyExclusive(DBCompareExpr other)

Specified by:

isMutuallyExclusive in class DBCompareExpr

addReferencedColumns

public void addReferencedColumns(Set<DBColumn> list)

Description copied from class: DBExpr

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

Specified by:

addReferencedColumns in class DBExpr

Parameters:

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

addSQL

public void addSQL(StringBuilder buf,
                   long context)

Description copied from class: DBExpr

Used to build the SQL command. SQL for this expression must be appended to StringBuilder.

Specified by:

addSQL in class DBExpr

Parameters:

buf - the string buffer used to build the sql command

context - context flag for this SQL-Command (see CTX_??? constants).