001: /*
002: * Copyright 2006 Sun Microsystems, Inc. All Rights Reserved.
003: * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
004: *
005: * This code is free software; you can redistribute it and/or modify it
006: * under the terms of the GNU General Public License version 2 only, as
007: * published by the Free Software Foundation. Sun designates this
008: * particular file as subject to the "Classpath" exception as provided
009: * by Sun in the LICENSE file that accompanied this code.
010: *
011: * This code is distributed in the hope that it will be useful, but WITHOUT
012: * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
013: * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
014: * version 2 for more details (a copy is included in the LICENSE file that
015: * accompanied this code).
016: *
017: * You should have received a copy of the GNU General Public License version
018: * 2 along with this work; if not, write to the Free Software Foundation,
019: * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
020: *
021: * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
022: * CA 95054 USA or visit www.sun.com if you need additional information or
023: * have any questions.
024: */
025:
026: package com.sun.tools.internal.xjc.reader.xmlschema;
027:
028: import java.util.Collection;
029:
030: import com.sun.tools.internal.xjc.model.CPropertyInfo;
031: import com.sun.tools.internal.xjc.model.Multiplicity;
032: import com.sun.tools.internal.xjc.reader.RawTypeSet;
033: import com.sun.tools.internal.xjc.reader.gbind.ConnectedComponent;
034: import com.sun.tools.internal.xjc.reader.gbind.Element;
035: import com.sun.tools.internal.xjc.reader.gbind.Expression;
036: import com.sun.tools.internal.xjc.reader.gbind.Graph;
037: import com.sun.tools.internal.xjc.reader.xmlschema.bindinfo.BIProperty;
038: import com.sun.xml.internal.bind.v2.model.core.WildcardMode;
039: import com.sun.xml.internal.xsom.XSParticle;
040:
041: /**
042: * {@link ParticleBinder} that uses {@link ExpressionBuilder} et al
043: * for better, more intuitive (but non spec-conforming) binding.
044: *
045: * @author Kohsuke Kawaguchi
046: */
047: final class ExpressionParticleBinder extends ParticleBinder {
048: public void build(XSParticle p, Collection<XSParticle> forcedProps) {
049: // this class isn't about spec conformance, but
050: // for the ease of use.
051: // so we don't give a damn about 'forcedProps'.
052: // although, for a future note, it's conceivable to expand
053: // the binding algorithm to cover this notion.
054:
055: Expression tree = ExpressionBuilder.createTree(p);
056: Graph g = new Graph(tree);
057: for (ConnectedComponent cc : g) {
058: buildProperty(cc);
059: }
060: }
061:
062: /**
063: * Builds a property ouf ot a connected component.
064: */
065: private void buildProperty(ConnectedComponent cc) {
066: StringBuilder propName = new StringBuilder(); // property name
067: int nameTokenCount = 0; // combine only up to 3
068:
069: RawTypeSetBuilder rtsb = new RawTypeSetBuilder();
070: for (Element e : cc) {
071: GElement ge = (GElement) e;
072:
073: if (nameTokenCount < 3) {
074: if (nameTokenCount != 0)
075: propName.append("And");
076: propName.append(makeJavaName(cc.isCollection(), ge
077: .getPropertyNameSeed()));
078: nameTokenCount++;
079: }
080:
081: if (e instanceof GElementImpl) {
082: GElementImpl ei = (GElementImpl) e;
083: rtsb.elementDecl(ei.decl);
084: continue;
085: }
086: if (e instanceof GWildcardElement) {
087: rtsb.getRefs().add(
088: new RawTypeSetBuilder.WildcardRef(
089: WildcardMode.SKIP));
090: continue;
091: }
092: assert false : e; // no other kind should be here
093: }
094:
095: Multiplicity m = Multiplicity.ONE;
096: if (cc.isCollection())
097: m = m.makeRepeated();
098: if (!cc.isRequired())
099: m = m.makeOptional();
100:
101: RawTypeSet rts = new RawTypeSet(rtsb.getRefs(), m);
102:
103: XSParticle p = findSourceParticle(cc);
104:
105: BIProperty cust = BIProperty.getCustomization(p);
106: CPropertyInfo prop = cust.createElementOrReferenceProperty(
107: propName.toString(), false, p, rts);
108: getCurrentBean().addProperty(prop);
109: }
110:
111: /**
112: * Finds a {@link XSParticle} that can serve as the representative property of
113: * the given {@link ConnectedComponent}.
114: *
115: * The representative property is used for reporting an error location and
116: * taking {@link BIProperty} customization. Right now, the algorithm is just pick
117: * the first one with {@link BIProperty}, but one can think of a better algorithm,
118: * such as taking a choice of (A|B) if CC={A,B}.
119: */
120: private XSParticle findSourceParticle(ConnectedComponent cc) {
121: XSParticle first = null;
122:
123: for (Element e : cc) {
124: GElement ge = (GElement) e;
125: for (XSParticle p : ge.particles) {
126: if (first == null)
127: first = p;
128: if (getLocalPropCustomization(p) != null)
129: return p;
130: }
131: // if there are multiple property customizations,
132: // all but one will be left unused, which will be detected as an error
133: // later, so no need to check that now.
134: }
135:
136: // if no customization was found, just use the first one.
137: return first;
138: }
139:
140: public boolean checkFallback(XSParticle p) {
141: // this algorithm never falls back to 'getContent'.
142: return false;
143: }
144: }
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