org.apache.empire.db.expr.compare

Class DBCompareParenthesisExpr

java.lang.Object

org.apache.empire.db.DBObject

org.apache.empire.db.DBExpr

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

org.apache.empire.db.expr.compare.DBCompareParenthesisExpr

All Implemented Interfaces:

Unwrappable<DBCompareExpr>

public class DBCompareParenthesisExpr
extends DBCompareExpr
implements Unwrappable<DBCompareExpr>

This class wraps an existing compare expression with parenthesis.

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
DBCompareParenthesisExpr(DBCompareExpr expr)

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)
boolean	isWrapper() Returns true if the object is a wrapper for another object
void	prepareCommand(DBCommand cmd) internally used for preapred statement generation
DBCompareExpr	unwrap() Unwrapps am object that is wrapped by this object If the object is not a wrapper then it must return itself (this)!

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

DBCompareParenthesisExpr

public DBCompareParenthesisExpr(DBCompareExpr expr)

Method Detail

isWrapper

public boolean isWrapper()

Description copied from interface: Unwrappable

Returns true if the object is a wrapper for another object

Specified by:

isWrapper in interface Unwrappable<DBCompareExpr>

unwrap

public DBCompareExpr unwrap()

Description copied from interface: Unwrappable

Unwrapps am object that is wrapped by this object If the object is not a wrapper then it must return itself (this)!

Specified by:

unwrap in interface Unwrappable<DBCompareExpr>

Returns:

the original object

getDatabase

public final 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

isMutuallyExclusive

public boolean isMutuallyExclusive(DBCompareExpr other)

Specified by:

isMutuallyExclusive in class DBCompareExpr

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

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).