/*
* The Apache Software License, Version 1.1
*
*
* Copyright (c) 2001, 2002 The Apache Software Foundation. All rights
* reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
*
* 3. The end-user documentation included with the redistribution,
* if any, must include the following acknowledgment:
* "This product includes software developed by the
* Apache Software Foundation (http://www.apache.org/)."
* Alternately, this acknowledgment may appear in the software itself,
* if and wherever such third-party acknowledgments normally appear.
*
* 4. The names "Xerces" and "Apache Software Foundation" must
* not be used to endorse or promote products derived from this
* software without prior written permission. For written
* permission, please contact apache@apache.org.
*
* 5. Products derived from this software may not be called "Apache",
* nor may "Apache" appear in their name, without prior written
* permission of the Apache Software Foundation.
*
* THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL THE APACHE SOFTWARE FOUNDATION OR
* ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
* USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
* OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
* ====================================================================
*
* This software consists of voluntary contributions made by many
* individuals on behalf of the Apache Software Foundation and was
* originally based on software copyright (c) 2001, International
* Business Machines, Inc., http://www.apache.org. For more
* information on the Apache Software Foundation, please see
* <http://www.apache.org/>.
*/
package com.sun.org.apache.xerces.internal.impl.xs;
import com.sun.org.apache.xerces.internal.xs.XSConstants;
import com.sun.org.apache.xerces.internal.xs.XSNamespaceItem;
import com.sun.org.apache.xerces.internal.xs.XSParticle;
import com.sun.org.apache.xerces.internal.xs.XSTerm;
/**
* Store schema particle declaration.
*
* @author Sandy Gao, IBM
*
* @version $Id: XSParticleDecl.java,v 1.12 2003/11/11 20:14:58 sandygao Exp $
*/
public class XSParticleDecl implements XSParticle {
// types of particles
public static final short PARTICLE_EMPTY = 0;
public static final short PARTICLE_ELEMENT = 1;
public static final short PARTICLE_WILDCARD = 2;
public static final short PARTICLE_MODELGROUP = 3;
public static final short PARTICLE_ZERO_OR_MORE = 4;
public static final short PARTICLE_ZERO_OR_ONE = 5;
public static final short PARTICLE_ONE_OR_MORE = 6;
// type of the particle
public short fType = PARTICLE_EMPTY;
// term of the particle
// for PARTICLE_ELEMENT : the element decl
// for PARTICLE_WILDCARD: the wildcard decl
// for PARTICLE_MODELGROUP: the model group
public XSTerm fValue = null;
// minimum occurrence of this particle
public int fMinOccurs = 1;
// maximum occurrence of this particle
public int fMaxOccurs = 1;
// clone this decl
public XSParticleDecl makeClone() {
XSParticleDecl particle = new XSParticleDecl();
particle.fType = fType;
particle.fMinOccurs = fMinOccurs;
particle.fMaxOccurs = fMaxOccurs;
particle.fDescription = fDescription;
particle.fValue = fValue;
return particle;
}
/**
* 3.9.6 Schema Component Constraint: Particle Emptiable
* whether this particle is emptible
*/
public boolean emptiable() {
return minEffectiveTotalRange() == 0;
}
// whether this particle contains nothing
public boolean isEmpty() {
if (fType == PARTICLE_EMPTY)
return true;
if (fType == PARTICLE_ELEMENT || fType == PARTICLE_WILDCARD)
return false;
return ((XSModelGroupImpl)fValue).isEmpty();
}
/**
* 3.8.6 Effective Total Range (all and sequence) and
* Effective Total Range (choice)
* The following methods are used to return min/max range for a particle.
* They are not exactly the same as it's described in the spec, but all the
* values from the spec are retrievable by these methods.
*/
public int minEffectiveTotalRange() {
if (fType == XSParticleDecl.PARTICLE_EMPTY) {
return 0;
}
if (fType == PARTICLE_MODELGROUP) {
return ((XSModelGroupImpl)fValue).minEffectiveTotalRange() * fMinOccurs;
}
return fMinOccurs;
}
public int maxEffectiveTotalRange() {
if (fType == XSParticleDecl.PARTICLE_EMPTY) {
return 0;
}
if (fType == PARTICLE_MODELGROUP) {
int max = ((XSModelGroupImpl)fValue).maxEffectiveTotalRange();
if (max == SchemaSymbols.OCCURRENCE_UNBOUNDED)
return SchemaSymbols.OCCURRENCE_UNBOUNDED;
if (max != 0 && fMaxOccurs == SchemaSymbols.OCCURRENCE_UNBOUNDED)
return SchemaSymbols.OCCURRENCE_UNBOUNDED;
return max * fMaxOccurs;
}
return fMaxOccurs;
}
/**
* get the string description of this particle
*/
private String fDescription = null;
public String toString() {
if (fDescription == null) {
StringBuffer buffer = new StringBuffer();
appendParticle(buffer);
if (!(fMinOccurs == 0 && fMaxOccurs == 0 ||
fMinOccurs == 1 && fMaxOccurs == 1)) {
buffer.append("{" + fMinOccurs);
if (fMaxOccurs == SchemaSymbols.OCCURRENCE_UNBOUNDED)
buffer.append("-UNBOUNDED");
else if (fMinOccurs != fMaxOccurs)
buffer.append("-" + fMaxOccurs);
buffer.append("}");
}
fDescription = buffer.toString();
}
return fDescription;
}
/**
* append the string description of this particle to the string buffer
* this is for error message.
*/
void appendParticle(StringBuffer buffer) {
switch (fType) {
case PARTICLE_EMPTY:
buffer.append("EMPTY");
break;
case PARTICLE_ELEMENT:
case PARTICLE_WILDCARD:
buffer.append('(');
buffer.append(fValue.toString());
buffer.append(')');
break;
case PARTICLE_MODELGROUP:
buffer.append(fValue.toString());
break;
}
}
public void reset(){
fType = PARTICLE_EMPTY;
fValue = null;
fMinOccurs = 1;
fMaxOccurs = 1;
fDescription = null;
}
/**
* Get the type of the object, i.e ELEMENT_DECLARATION.
*/
public short getType() {
return XSConstants.PARTICLE;
}
/**
* The <code>name</code> of this <code>XSObject</code> depending on the
* <code>XSObject</code> type.
*/
public String getName() {
return null;
}
/**
* The namespace URI of this node, or <code>null</code> if it is
* unspecified. defines how a namespace URI is attached to schema
* components.
*/
public String getNamespace() {
return null;
}
/**
* {min occurs} determines the minimum number of terms that can occur.
*/
public int getMinOccurs() {
return fMinOccurs;
}
/**
* {max occurs} whether the maxOccurs value is unbounded.
*/
public boolean getMaxOccursUnbounded() {
return fMaxOccurs == SchemaSymbols.OCCURRENCE_UNBOUNDED;
}
/**
* {max occurs} determines the maximum number of terms that can occur.
*/
public int getMaxOccurs() {
return fMaxOccurs;
}
/**
* {term} One of a model group, a wildcard, or an element declaration.
*/
public XSTerm getTerm() {
return fValue;
}
/**
* @see com.sun.org.apache.xerces.internal.xs.XSObject#getNamespaceItem()
*/
public XSNamespaceItem getNamespaceItem() {
return null;
}
} // class XSParticle
|
