org.omwg.mediation.language.objectModel
Class Expression

java.lang.Object
  org.omwg.mediation.language.objectModel.Expression

Direct Known Subclasses:

AttributeExpr, ClassExpr, InstanceExpr, RelationExpr

public abstract class Expression
extends java.lang.Object

Defines the general operators and specific expressions needed for the mapping. Has four extenstions where expression objects are constructed: InstanceExpr, ClassExpr, RelationExpr, & AttributeExpr

Version:

$Revision: 1.4 $ $Date: 2005/06/20 09:54:04 $

Author:

Francois Scharffe, Adrian Mocan Created on 23-Mar-2005 Committed by $Author: grahamhench $ $Source: /cvsroot/dome//dome/src/org/omwg/mediation/language/objectModel/Expression.java,v $,

Field Summary

static java.lang.String	AND_OPERATOR Represents string type "and" operator
static java.lang.String	INVERSE_OPERATOR Represents string type "inverse" operator
static java.lang.String	JOIN_OPERATOR Represents string type "join" operator
static java.lang.String	NOT_OPERATOR Represents string type "not" operator
static java.lang.String	OR_OPERATOR Represents string type "or" operator
static java.lang.String	REFLEXIVE_OPERATOR Represents string type "reflexive" operator
static java.lang.String	SYMMETRIC_OPERATOR Represents string type "symmetric" operator
static java.lang.String	TRANS_OPERATOR Represents string type "transitive" operator

Constructor Summary

Expression()

Method Summary

abstract java.lang.Object	clone() Copies expression object
Id	getId() Returns expression definition id if the expression is not complex
java.lang.String	getOperator() Returns expression (operating function) in string type if the expression definition is complex
abstract Expression	getSubExpression(int index) Returns specific expression from the array list of sub-expressions that constitute the complex expression when predefined
abstract java.util.ArrayList	getSubExpressionsList() Returns the array list of sub-expressions that constitute the complex expression when predefined
boolean	isComplexExpression() Returns boolean declaring whether or not the expression definition is complex
java.lang.String	toString() Returns string representation of the expression definition

Methods inherited from class java.lang.Object

equals, getClass, hashCode, notify, notifyAll, wait, wait, wait

Field Detail

AND_OPERATOR

public static final java.lang.String AND_OPERATOR

Represents string type "and" operator

See Also:

Constant Field Values

OR_OPERATOR

public static final java.lang.String OR_OPERATOR

Represents string type "or" operator

See Also:

Constant Field Values

NOT_OPERATOR

public static final java.lang.String NOT_OPERATOR

Represents string type "not" operator

See Also:

Constant Field Values

JOIN_OPERATOR

public static final java.lang.String JOIN_OPERATOR

Represents string type "join" operator

See Also:

Constant Field Values

INVERSE_OPERATOR

public static final java.lang.String INVERSE_OPERATOR

Represents string type "inverse" operator

See Also:

Constant Field Values

SYMMETRIC_OPERATOR

public static final java.lang.String SYMMETRIC_OPERATOR

Represents string type "symmetric" operator

See Also:

Constant Field Values

REFLEXIVE_OPERATOR

public static final java.lang.String REFLEXIVE_OPERATOR

Represents string type "reflexive" operator

See Also:

Constant Field Values

TRANS_OPERATOR

public static final java.lang.String TRANS_OPERATOR

Represents string type "transitive" operator

See Also:

Constant Field Values

Constructor Detail

Expression

public Expression()

Method Detail

isComplexExpression

public boolean isComplexExpression()

Returns boolean declaring whether or not the expression definition is complex

Returns:

boolean (referring to whether or not the expression is complex)

getId

public Id getId()

Returns expression definition id if the expression is not complex

Returns:

Id (of the expression definition)

getOperator

public java.lang.String getOperator()

Returns expression (operating function) in string type if the expression definition is complex

Returns:

Id (of the expression definition)

getSubExpressionsList

public abstract java.util.ArrayList getSubExpressionsList()

Returns the array list of sub-expressions that constitute the complex expression when predefined

Returns:

subExpression (array list)

getSubExpression

public abstract Expression getSubExpression(int index)

Returns specific expression from the array list of sub-expressions that constitute the complex expression when predefined

Returns:

expression (expression object)

toString

public java.lang.String toString()

Returns string representation of the expression definition

Overrides:

toString in class java.lang.Object

Returns:

expression definition (string type)

clone

public abstract java.lang.Object clone()

Copies expression object

Overrides:

clone in class java.lang.Object