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package com.sun.org.apache.xerces.internal.impl.xs;
import com.sun.org.apache.xerces.internal.impl.xs.util.XSObjectListImpl;
import com.sun.org.apache.xerces.internal.xs.XSAnnotation;
import com.sun.org.apache.xerces.internal.xs.XSConstants;
import com.sun.org.apache.xerces.internal.xs.XSModelGroup;
import com.sun.org.apache.xerces.internal.xs.XSNamespaceItem;
import com.sun.org.apache.xerces.internal.xs.XSObjectList;
/**
* Store schema model group declaration.
*
* @xerces.internal
*
* @author Sandy Gao, IBM
*
* @version $Id: XSModelGroupImpl.java,v 1.7 2010-11-01 04:39:55 joehw Exp $
*/
public class XSModelGroupImpl implements XSModelGroup {
// types of model groups
// REVISIT: can't use same constants as those for particles, because
// there are place where the constants are used together. For example,
// to check whether the content is an element or a sequence.
public static final short MODELGROUP_CHOICE = 101;
public static final short MODELGROUP_SEQUENCE = 102;
public static final short MODELGROUP_ALL = 103;
// compositor of the model group
public short fCompositor;
// particles
public XSParticleDecl[] fParticles = null;
public int fParticleCount = 0;
// this particle's optional annotations
public XSObjectList fAnnotations = null;
// whether this model group contains nothing
public boolean isEmpty() {
for (int i = 0; i < fParticleCount; i++) {
if (!fParticles[i].isEmpty())
return false;
}
return true;
}
/**
* 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 (fCompositor == MODELGROUP_CHOICE)
return minEffectiveTotalRangeChoice();
else
return minEffectiveTotalRangeAllSeq();
}
// return the sum of all min values of the particles
private int minEffectiveTotalRangeAllSeq() {
int total = 0;
for (int i = 0; i < fParticleCount; i++)
total += fParticles[i].minEffectiveTotalRange();
return total;
}
// return the min of all min values of the particles
private int minEffectiveTotalRangeChoice() {
int min = 0, one;
if (fParticleCount > 0)
min = fParticles[0].minEffectiveTotalRange();
for (int i = 1; i < fParticleCount; i++) {
one = fParticles[i].minEffectiveTotalRange();
if (one < min)
min = one;
}
return min;
}
public int maxEffectiveTotalRange() {
if (fCompositor == MODELGROUP_CHOICE)
return maxEffectiveTotalRangeChoice();
else
return maxEffectiveTotalRangeAllSeq();
}
// if one of the max value of the particles is unbounded, return unbounded;
// otherwise return the sum of all max values
private int maxEffectiveTotalRangeAllSeq() {
int total = 0, one;
for (int i = 0; i < fParticleCount; i++) {
one = fParticles[i].maxEffectiveTotalRange();
if (one == SchemaSymbols.OCCURRENCE_UNBOUNDED)
return SchemaSymbols.OCCURRENCE_UNBOUNDED;
total += one;
}
return total;
}
// if one of the max value of the particles is unbounded, return unbounded;
// otherwise return the max of all max values
private int maxEffectiveTotalRangeChoice() {
int max = 0, one;
if (fParticleCount > 0) {
max = fParticles[0].maxEffectiveTotalRange();
if (max == SchemaSymbols.OCCURRENCE_UNBOUNDED)
return SchemaSymbols.OCCURRENCE_UNBOUNDED;
}
for (int i = 1; i < fParticleCount; i++) {
one = fParticles[i].maxEffectiveTotalRange();
if (one == SchemaSymbols.OCCURRENCE_UNBOUNDED)
return SchemaSymbols.OCCURRENCE_UNBOUNDED;
if (one > max)
max = one;
}
return max;
}
/**
* get the string description of this particle
*/
private String fDescription = null;
public String toString() {
// REVISIT: Commented code may help to eliminate redundant parentheses (test first before committing)
if (fDescription == null) {
StringBuffer buffer = new StringBuffer();
if (fCompositor == MODELGROUP_ALL)
buffer.append("all(");
else //if (fMinOccurs != 1 || fMaxOccurs != 1)
buffer.append('(');
if (fParticleCount > 0)
buffer.append(fParticles[0].toString());
for (int i = 1; i < fParticleCount; i++) {
if (fCompositor == MODELGROUP_CHOICE)
buffer.append('|');
else
buffer.append(',');
buffer.append(fParticles[i].toString());
}
//if (fCompositor == MODELGROUP_ALL || fMinOccurs != 1 || fMaxOccurs != 1)
buffer.append(')');
fDescription = buffer.toString();
}
return fDescription;
}
public void reset(){
fCompositor = MODELGROUP_SEQUENCE;
fParticles = null;
fParticleCount = 0;
fDescription = null;
fAnnotations = null;
}
/**
* Get the type of the object, i.e ELEMENT_DECLARATION.
*/
public short getType() {
return XSConstants.MODEL_GROUP;
}
/**
* The name of this XSObject depending on the
* XSObject type.
*/
public String getName() {
return null;
}
/**
* The namespace URI of this node, or null if it is
* unspecified. defines how a namespace URI is attached to schema
* components.
*/
public String getNamespace() {
return null;
}
/**
* {compositor} One of all, choice or sequence. The valid constants values
* are: ALL, CHOICE, SEQUENCE.
*/
public short getCompositor() {
if (fCompositor == MODELGROUP_CHOICE)
return XSModelGroup.COMPOSITOR_CHOICE;
else if (fCompositor == MODELGROUP_SEQUENCE)
return XSModelGroup.COMPOSITOR_SEQUENCE;
else
return XSModelGroup.COMPOSITOR_ALL;
}
/**
* {particles} A list of particles
*/
public XSObjectList getParticles() {
return new XSObjectListImpl(fParticles, fParticleCount);
}
/**
* Optional. Annotation.
*/
public XSAnnotation getAnnotation() {
return (fAnnotations != null) ? (XSAnnotation) fAnnotations.item(0) : null;
}
/**
* Optional. Annotations.
*/
public XSObjectList getAnnotations() {
return (fAnnotations != null) ? fAnnotations : XSObjectListImpl.EMPTY_LIST;
}
/**
* @see org.apache.xerces.xs.XSObject#getNamespaceItem()
*/
public XSNamespaceItem getNamespaceItem() {
return null;
}
} // class XSModelGroupImpl