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package com.sun.xml.xsom.impl;
import com.sun.xml.xsom.XSElementDecl;
import com.sun.xml.xsom.XSIdentityConstraint;
import com.sun.xml.xsom.XSModelGroup;
import com.sun.xml.xsom.XSModelGroupDecl;
import com.sun.xml.xsom.XSTerm;
import com.sun.xml.xsom.XSType;
import com.sun.xml.xsom.XSWildcard;
import com.sun.xml.xsom.XmlString;
import com.sun.xml.xsom.impl.parser.PatcherManager;
import com.sun.xml.xsom.impl.parser.SchemaDocumentImpl;
import com.sun.xml.xsom.visitor.XSFunction;
import com.sun.xml.xsom.visitor.XSTermFunction;
import com.sun.xml.xsom.visitor.XSTermFunctionWithParam;
import com.sun.xml.xsom.visitor.XSTermVisitor;
import com.sun.xml.xsom.visitor.XSVisitor;
import org.xml.sax.Locator;
import java.util.Collections;
import java.util.HashSet;
import java.util.List;
import java.util.Set;
public class ElementDecl extends DeclarationImpl implements XSElementDecl, Ref.Term
{
public ElementDecl( PatcherManager reader, SchemaDocumentImpl owner,
AnnotationImpl _annon, Locator _loc, ForeignAttributesImpl fa,
String _tns, String _name, boolean _anonymous,
XmlString _defv, XmlString _fixedv,
boolean _nillable, boolean _abstract, Boolean _form,
Ref.Type _type, Ref.Element _substHead,
int _substDisallowed, int _substExcluded,
List idConstraints) {
super(owner,_annon,_loc,fa,_tns,_name,_anonymous);
this.defaultValue = _defv;
this.fixedValue = _fixedv;
this.nillable = _nillable;
this._abstract = _abstract;
this.form = _form;
this.type = _type;
this.substHead = _substHead;
this.substDisallowed = _substDisallowed;
this.substExcluded = _substExcluded;
this.idConstraints = Collections.unmodifiableList((List)idConstraints);
for (IdentityConstraintImpl idc : idConstraints)
idc.setParent(this);
if(type==null)
throw new IllegalArgumentException();
}
private XmlString defaultValue;
public XmlString getDefaultValue() { return defaultValue; }
private XmlString fixedValue;
public XmlString getFixedValue() { return fixedValue; }
private boolean nillable;
public boolean isNillable() { return nillable; }
private boolean _abstract;
public boolean isAbstract() { return _abstract; }
private Ref.Type type;
public XSType getType() { return type.getType(); }
private Ref.Element substHead;
public XSElementDecl getSubstAffiliation() {
if(substHead==null) return null;
return substHead.get();
}
private int substDisallowed;
public boolean isSubstitutionDisallowed( int method ) {
return (substDisallowed&method)!=0;
}
private int substExcluded;
public boolean isSubstitutionExcluded( int method ) {
return (substExcluded&method)!=0;
}
private final List idConstraints;
public List getIdentityConstraints() {
return idConstraints;
}
private Boolean form;
public Boolean getForm() {
return form;
}
/**
* @deprecated
*/
public XSElementDecl[] listSubstitutables() {
Set s = getSubstitutables();
return s.toArray(new XSElementDecl[s.size()]);
}
/** Set that represents element decls that can substitute this element. */
private Set substitutables = null;
/** Unmodifieable view of {@link #substitutables}. */
private Set substitutablesView = null;
public Set getSubstitutables() {
if( substitutables==null ) {
// if the field is null by the time this method
// is called, it means this element is substitutable by itself only.
substitutables = substitutablesView = Collections.singleton((XSElementDecl)this);
}
return substitutablesView;
}
protected void addSubstitutable( ElementDecl decl ) {
if( substitutables==null ) {
substitutables = new HashSet();
substitutables.add(this);
substitutablesView = Collections.unmodifiableSet(substitutables);
}
substitutables.add(decl);
}
public void updateSubstitutabilityMap() {
ElementDecl parent = this;
XSType type = this.getType();
boolean rused = false;
boolean eused = false;
while( (parent=(ElementDecl)parent.getSubstAffiliation())!=null ) {
if(parent.isSubstitutionDisallowed(XSType.SUBSTITUTION))
continue;
boolean rd = parent.isSubstitutionDisallowed(XSType.RESTRICTION);
boolean ed = parent.isSubstitutionDisallowed(XSType.EXTENSION);
if( (rd && rused) || ( ed && eused ) ) continue;
XSType parentType = parent.getType();
while (type!=parentType) {
if(type.getDerivationMethod()==XSType.RESTRICTION) rused = true;
else eused = true;
type = type.getBaseType();
if(type==null) // parentType and type doesn't share the common base type. a bug in the schema.
break;
if( type.isComplexType() ) {
rd |= type.asComplexType().isSubstitutionProhibited(XSType.RESTRICTION);
ed |= type.asComplexType().isSubstitutionProhibited(XSType.EXTENSION);
}
if (getRoot().getAnyType().equals(type)) break;
}
if( (rd && rused) || ( ed && eused ) ) continue;
// this element can substitute "parent"
parent.addSubstitutable(this);
}
}
public boolean canBeSubstitutedBy(XSElementDecl e) {
return getSubstitutables().contains(e);
}
public boolean isWildcard() { return false; }
public boolean isModelGroupDecl() { return false; }
public boolean isModelGroup() { return false; }
public boolean isElementDecl() { return true; }
public XSWildcard asWildcard() { return null; }
public XSModelGroupDecl asModelGroupDecl() { return null; }
public XSModelGroup asModelGroup() { return null; }
public XSElementDecl asElementDecl() { return this; }
public void visit( XSVisitor visitor ) {
visitor.elementDecl(this);
}
public void visit( XSTermVisitor visitor ) {
visitor.elementDecl(this);
}
public Object apply( XSTermFunction function ) {
return function.elementDecl(this);
}
public T apply(XSTermFunctionWithParam function, P param) {
return function.elementDecl(this,param);
}
public Object apply( XSFunction function ) {
return function.elementDecl(this);
}
// Ref.Term implementation
public XSTerm getTerm() { return this; }
}
