com.sun.msv.grammar
Class ElementExp

java.lang.Object
  com.sun.msv.grammar.Expression
      com.sun.msv.grammar.ElementExp

All Implemented Interfaces:

NameClassAndExpression, Serializable

Direct Known Subclasses:

AnyOtherElementExp, ElementDeclExp.XSElementExp, ElementPattern, ElementRule, ExternalElementExp

public abstract class ElementExp
extends Expression
implements NameClassAndExpression

Element declaration. For RELAX, this is a base implementation of 'elementRule' declaration. For TREX, this is a base implementation of 'element' pattern. Each grammar must/can provide only one concrete implementation. Therefore, they cannot override visit method.

This class can be extended.

Author:

Kohsuke KAWAGUCHI

See Also:

Serialized Form

Field Summary

Expression	contentModel content model of this element declaration.
boolean	ignoreUndeclaredAttributes a flag that indicates undeclared attributes should be ignored.

Fields inherited from class com.sun.msv.grammar.Expression

anyString, epsilon, nullSet, verifierTag

Constructor Summary

ElementExp(Expression contentModel, boolean ignoreUndeclaredAttributes)

Method Summary

protected boolean	calcEpsilonReducibility() computes epsilon reducibility
protected int	calcHashCode() Computes the hashCode again.
boolean	equals(Object o)
Expression	getContentModel()
abstract NameClass	getNameClass() obtains a constraint over tag name.
Object	visit(ExpressionVisitor visitor)
boolean	visit(ExpressionVisitorBoolean visitor)
Expression	visit(ExpressionVisitorExpression visitor)
void	visit(ExpressionVisitorVoid visitor)

Methods inherited from class com.sun.msv.grammar.Expression

getExpandedExp, hashCode, hashCode, hashCode, isEpsilonReducible, peelOccurence, readResolve, visit, visit, visit, visit

Methods inherited from class java.lang.Object

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

Field Detail

contentModel

public Expression contentModel

content model of this element declaration.

ignoreUndeclaredAttributes

public boolean ignoreUndeclaredAttributes

a flag that indicates undeclared attributes should be ignored.

Constructor Detail

ElementExp

public ElementExp(Expression contentModel,
                  boolean ignoreUndeclaredAttributes)

Method Detail

getContentModel

public final Expression getContentModel()

Specified by:

getContentModel in interface NameClassAndExpression

getNameClass

public abstract NameClass getNameClass()

obtains a constraint over tag name. ElementExp is cannot be shared because NameClass has to be mutable to absorb the difference of RELAX and TREX. In case of TREX, name class will be determined when parsing ElementExp itself. Thus effectively it's immutable. In case of RELAX, name class will be determined when its corresponding Clause object is parsed.

Specified by:

getNameClass in interface NameClassAndExpression

calcHashCode

protected final int calcHashCode()

Description copied from class: Expression

Computes the hashCode again.

This method and the parameter to the constructor has to be the same. This method is used when the object is being read from the stream.

Specified by:

calcHashCode in class Expression

equals

public final boolean equals(Object o)

Specified by:

equals in class Expression

visit

public final Object visit(ExpressionVisitor visitor)

Specified by:

visit in class Expression

visit

public final Expression visit(ExpressionVisitorExpression visitor)

Specified by:

visit in class Expression

visit

public final boolean visit(ExpressionVisitorBoolean visitor)

Specified by:

visit in class Expression

visit

public final void visit(ExpressionVisitorVoid visitor)

Specified by:

visit in class Expression

calcEpsilonReducibility

protected final boolean calcEpsilonReducibility()

Description copied from class: Expression

computes epsilon reducibility

Specified by:

calcEpsilonReducibility in class Expression