Source Code Cross Referenced for SchemaParser.java in  » Ajax » Laszlo-4.0.10 » org » openlaszlo » remote » swf » soap » Java Source Code / Java DocumentationJava Source Code and Java Documentation

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Java Source Code / Java Documentation » Ajax » Laszlo 4.0.10 » org.openlaszlo.remote.swf.soap 
Source Cross Referenced  Class Diagram Java Document (Java Doc) 


001:        /* *****************************************************************************
002:         * SchemaParser.java
003:         * ****************************************************************************/
004:
005:        /* J_LZ_COPYRIGHT_BEGIN *******************************************************
006:         * Copyright 2001-2007 Laszlo Systems, Inc.  All Rights Reserved.              *
007:         * Use is subject to license terms.                                            *
008:         * J_LZ_COPYRIGHT_END *********************************************************/
009:
010:        package org.openlaszlo.remote.swf.soap;
011:
012:        import java.util.*;
013:        import java.io.*;
014:        import javax.xml.rpc.*;
015:        import javax.xml.parsers.*;
016:        import javax.xml.namespace.*;
017:        import org.w3c.dom.*;
018:        import org.xml.sax.*;
019:        import org.apache.axis.Constants;
020:
021:        import org.apache.log4j.Logger;
022:
023:        import org.apache.axis.utils.*;
024:
025:        public class SchemaParser {
026:            public static Logger mLogger = Logger.getLogger(SchemaParser.class);
027:
028:            static final int ARRAY = 0;
029:            static final int REGULAR_OBJECT = 1;
030:            static final int SEQUENCED_OBJECT = 2;
031:
032:            /** don't support for now 
033:            static final int EXTENDED_OBJECT = 3; // object with <xsd:extention>
034:             **/
035:
036:            // Contains a list of complex types that extend from types not yet defined
037:            // in the schema. Once base complex type is found, subclasses are assigned
038:            // the complex type objects.
039:            Map mBaseForwardTypeMap;
040:            Map mArrayForwardTypeMap;
041:
042:            Map mComplexTypeMap;
043:
044:            // Values which are set when WSDLParser is passed in.
045:            String mNamespaceURI_SOAP_ENC;
046:            String mNamespaceURI_SCHEMA_XSD;
047:            String mNamespaceURI_WSDL;
048:            String mTargetNamespaceURI;
049:
050:            QName mSOAPEncodingArray;
051:            QName mSOAPEncodingArrayType;
052:
053:            Element mSchema;
054:
055:            /**
056:             * @param wp parsed WSDLParser
057:             * @param schema element representing schema element
058:             */
059:            public SchemaParser(WSDLParser wp, Element schema) {
060:
061:                mNamespaceURI_SCHEMA_XSD = wp.mNamespaceURI_SCHEMA_XSD;
062:                mNamespaceURI_SOAP_ENC = wp.mNamespaceURI_SOAP_ENC;
063:                mNamespaceURI_WSDL = wp.mNamespaceURI_WSDL;
064:
065:                mSOAPEncodingArray = new QName(mNamespaceURI_SOAP_ENC, "Array");
066:                mSOAPEncodingArrayType = new QName(mNamespaceURI_SOAP_ENC,
067:                        "arrayType");
068:
069:                // set the target element here.
070:                mTargetNamespaceURI = schema.getAttribute("targetNamespace");
071:
072:                mBaseForwardTypeMap = new HashMap();
073:                mArrayForwardTypeMap = new HashMap();
074:
075:                mSchema = schema;
076:
077:                if (mLogger.isDebugEnabled()) {
078:                    mLogger.debug("mNamespaceURI_SCHEMA_XSD: "
079:                            + mNamespaceURI_SCHEMA_XSD);
080:                    mLogger.debug("mNamespaceURI_SOAP_ENC: "
081:                            + mNamespaceURI_SOAP_ENC);
082:                    mLogger.debug("mNamespaceURI_WSDL_SOAP: "
083:                            + mNamespaceURI_WSDL);
084:                    mLogger.debug("mSOAPEncodingArray: " + mSOAPEncodingArray);
085:                    mLogger.debug("mSOAPEncodingArrayType: "
086:                            + mSOAPEncodingArrayType);
087:                    mLogger
088:                            .debug("mTargetNamespaceURI: "
089:                                    + mTargetNamespaceURI);
090:                }
091:            }
092:
093:            /**
094:             * @param complexTypeMap map where ComplexType objects will be stored.
095:             */
096:            public void parse(Map complexTypeMap) {
097:
098:                // save it so we can use it for checkExtension
099:                mComplexTypeMap = complexTypeMap;
100:
101:                // just get the complex types
102:                NodeList list = mSchema.getElementsByTagNameNS(
103:                        mNamespaceURI_SCHEMA_XSD, "complexType");
104:
105:                for (int i = 0; i < list.getLength(); i++) {
106:                    try {
107:                        ComplexType so = getComplexType((Element) list.item(i));
108:                        if (so != null) {
109:                            fixBaseForwardRefs(so);
110:                            fixArrayForwardRefs(so);
111:                            complexTypeMap.put(so.getName(), so);
112:                        } else {
113:                            mLogger.warn("skipping: " + list.item(i));
114:                        }
115:                    } catch (Exception e) {
116:                        mLogger.error(
117:                                "skipping complexType: " + e.getMessage(), e);
118:                    }
119:                }
120:
121:                if (mBaseForwardTypeMap.size() != 0) {
122:                    mLogger
123:                            .warn("The following base classes were not defined:");
124:                    Iterator iter = mBaseForwardTypeMap.keySet().iterator();
125:                    while (iter.hasNext()) {
126:                        QName baseQName = (QName) iter.next();
127:                        mLogger.warn("    " + baseQName);
128:                    }
129:                }
130:            }
131:
132:            /**
133:             * Checks to see if object was referred by other types earlier in the
134:             * schema. If so, set their base class to baseType.
135:             */
136:            void fixBaseForwardRefs(ComplexType baseType) {
137:                QName baseQName = baseType.getName();
138:                Vector list = (Vector) mBaseForwardTypeMap.get(baseQName);
139:                if (list == null)
140:                    return;
141:                for (int i = 0; i < list.size(); i++) {
142:                    ComplexType ct = (ComplexType) list.get(i);
143:                    ct.setBase(baseType);
144:                }
145:                mBaseForwardTypeMap.remove(baseQName);
146:            }
147:
148:            /**
149:             * Checks to see if object was referred by other types earlier in the
150:             * schema. If so, set their base class to baseType.
151:             */
152:            void fixArrayForwardRefs(ComplexType arrayItemType) {
153:                QName arrayQName = arrayItemType.getName();
154:                Vector list = (Vector) mArrayForwardTypeMap.get(arrayQName);
155:                if (list == null)
156:                    return;
157:                for (int i = 0; i < list.size(); i++) {
158:                    ComplexType ct = (ComplexType) list.get(i);
159:                    ct.setArrayItemType(arrayItemType);
160:                }
161:                mArrayForwardTypeMap.remove(arrayQName);
162:            }
163:
164:            /** 
165:             * Set the base type object for complex type, if it exists. Otherwise, mark
166:             * base type forward ref.
167:             * @param baseQName the qname for the base type.
168:             * @param ct the complex type object that extends from baseQName.
169:             */
170:            void setBaseType(QName baseQName, ComplexType ct) {
171:                ComplexType baseType = (ComplexType) mComplexTypeMap
172:                        .get(baseQName);
173:                if (baseType == null) {
174:                    // place soap enc type in map. Set actual soap enc for arrays.
175:                    if (Constants.isSOAP_ENC(baseQName.getNamespaceURI())) {
176:                        baseType = new ComplexType(baseQName);
177:                        mComplexTypeMap.put(baseQName, baseType);
178:                        ct.setBase(baseType);
179:                    } else {
180:                        Vector list = (Vector) mBaseForwardTypeMap
181:                                .get(baseQName);
182:                        if (list == null) {
183:                            list = new Vector();
184:                            mBaseForwardTypeMap.put(baseQName, list);
185:                        }
186:                        list.add(ct);
187:                    }
188:                } else {
189:                    ct.setBase(baseType);
190:                }
191:            }
192:
193:            /** 
194:             * Set the aray type object for array type, if it exists. Otherwise, mark
195:             * array type forward ref.
196:             * @param arrayQName the qname for the array type.
197:             * @param ct the complex type object that is an array.
198:             */
199:            void setArrayItemType(QName arrayQName, ComplexType ct) {
200:                ComplexType arrayItemType = (ComplexType) mComplexTypeMap
201:                        .get(arrayQName);
202:                if (arrayItemType == null) {
203:                    // place simple type in map
204:                    if (Constants.isSchemaXSD(arrayQName.getNamespaceURI())) {
205:                        arrayItemType = new ComplexType(arrayQName);
206:                        mComplexTypeMap.put(arrayQName, arrayItemType);
207:                        ct.setArrayItemType(arrayItemType);
208:                    } else {
209:                        // set forward ref 
210:                        Vector list = (Vector) mArrayForwardTypeMap
211:                                .get(arrayQName);
212:                        if (list == null) {
213:                            list = new Vector();
214:                            mArrayForwardTypeMap.put(arrayQName, list);
215:                        }
216:                        list.add(ct);
217:                    }
218:
219:                } else {
220:                    ct.setArrayItemType(arrayItemType);
221:                }
222:            }
223:
224:            ComplexType getComplexType(Element ct) throws Exception {
225:                String name = ct.getAttribute("name");
226:
227:                NodeList list;
228:                list = ct.getElementsByTagNameNS(mNamespaceURI_SCHEMA_XSD,
229:                        "complexContent");
230:                if (foundOne(list)) {
231:                    // check for array in elements inside of <complexContent>
232:                    return checkComplexContent(name, (Element) list.item(0));
233:                }
234:
235:                list = ct.getElementsByTagNameNS(mNamespaceURI_SCHEMA_XSD,
236:                        "all");
237:                if (foundOne(list)) {
238:                    // get values inside <all> element
239:                    return checkAllOrSequence(name, (Element) list.item(0));
240:                }
241:
242:                list = ct.getElementsByTagNameNS(mNamespaceURI_SCHEMA_XSD,
243:                        "sequence");
244:                if (foundOne(list)) {
245:                    // get values inside <sequence> element
246:                    return checkAllOrSequence(name, (Element) list.item(0));
247:                }
248:
249:                mLogger
250:                        .warn("no <complexContent>, <all>, or <sequence> nodes found under <complexType>");
251:                return null;
252:            }
253:
254:            /**
255:             * Currently, just checks to see if complex content is an array. Anything
256:             * else will throw an exception.
257:             */
258:            ComplexType checkComplexContent(String name, Element cc)
259:                    throws Exception {
260:                if (mLogger.isDebugEnabled()) {
261:                    mLogger.debug("checkComplexContent: " + name + ", " + cc);
262:                }
263:
264:                NodeList list;
265:                list = cc.getElementsByTagNameNS(mNamespaceURI_SCHEMA_XSD,
266:                        "restriction");
267:                if (foundOne(list)) {
268:                    return checkRestriction(name, (Element) list.item(0));
269:                }
270:
271:                list = cc.getElementsByTagNameNS(mNamespaceURI_SCHEMA_XSD,
272:                        "extension");
273:                if (foundOne(list)) {
274:                    return checkExtension(name, (Element) list.item(0));
275:                }
276:
277:                // <restriction> and <extension> ony supported in <complexContent>
278:                mLogger
279:                        .warn("No <restriction> or <extension> tags were found inside of <complexContent>");
280:                return null;
281:            }
282:
283:            /**
284:             * 
285:             */
286:            ComplexType checkExtension(String name, Element extension)
287:                    throws Exception {
288:                NodeList list;
289:                ComplexType ct = null;
290:                list = extension.getElementsByTagNameNS(
291:                        mNamespaceURI_SCHEMA_XSD, "all");
292:                if (foundOne(list)) {
293:                    // get values inside <all> element
294:                    ct = checkAllOrSequence(name, (Element) list.item(0));
295:                }
296:
297:                list = extension.getElementsByTagNameNS(
298:                        mNamespaceURI_SCHEMA_XSD, "sequence");
299:                if (foundOne(list)) {
300:                    // get values inside <sequence> element
301:                    ct = checkAllOrSequence(name, (Element) list.item(0));
302:                }
303:
304:                if (ct == null) {
305:                    mLogger
306:                            .warn("no <all> or <sequence> nodes found under <extension>");
307:                    return null;
308:                }
309:
310:                String base = extension.getAttribute("base");
311:                if (base == null || base.equals("")) {
312:                    throw new Exception(
313:                            "no base attribute found in <extension>");
314:                }
315:
316:                QName baseQName = XMLUtils.getQNameFromString(base, extension);
317:                setBaseType(baseQName, ct);
318:                return ct;
319:            }
320:
321:            /**
322:             * Assume <restriction> in <complexContent> means array (for now).
323:             */
324:            ComplexType checkRestriction(String name, Element restriction)
325:                    throws Exception {
326:                String base = restriction.getAttribute("base");
327:                if (base == null || base.equals("")) {
328:                    throw new Exception(
329:                            "no base attribute found in <restriction>");
330:                }
331:
332:                QName baseQName = XMLUtils
333:                        .getQNameFromString(base, restriction);
334:                if (!mSOAPEncodingArray.equals(baseQName)) {
335:                    throw new Exception(
336:                            "only arrays are supported in <restriction>, instead found "
337:                                    + baseQName);
338:                }
339:
340:                // now try to get type of array from <attribute> element in
341:                // <restriction>
342:                NodeList list = restriction.getElementsByTagNameNS(
343:                        mNamespaceURI_SCHEMA_XSD, "attribute");
344:                if (!foundOne(list)) {
345:                    // FIXME
346:                    // XXX this is not necessarily true...I think we can assume anyType
347:                    // array if attribute is missing. Fix this later.
348:                    throw new Exception(
349:                            "expecting only one attribute inside <restriction base=\"soapenc:Array\">");
350:                }
351:
352:                Element attributeElement = (Element) list.item(0);
353:                String ref = attributeElement.getAttribute("ref");
354:
355:                String arrayItemType = attributeElement.getAttributeNS(
356:                        mNamespaceURI_WSDL, "arrayType");
357:
358:                if (ref.equals("")) {
359:                    throw new Exception(
360:                            "empty ref attribute in <attribute> inside of <restriction> for <complexType> named "
361:                                    + name);
362:                }
363:
364:                if (arrayItemType.equals("")) {
365:                    throw new Exception(
366:                            "empty ref attribute in <attribute> inside of <restriction> for <complexType> named "
367:                                    + name);
368:                }
369:
370:                QName refQName = XMLUtils.getQNameFromString(ref,
371:                        attributeElement);
372:                if (!mSOAPEncodingArrayType.equals(refQName)) {
373:                    throw new Exception(
374:                            "ref attribute in <attribute> inside of <restriction> does not refer to SOAP-ENC array");
375:                }
376:
377:                String type = removeBrackets(arrayItemType);
378:                QName typeQName = XMLUtils.getQNameFromString(type,
379:                        attributeElement);
380:
381:                // array complex type
382:                ComplexType ct = new ComplexType(new QName(mTargetNamespaceURI,
383:                        name), true);
384:                setArrayItemType(typeQName, ct);
385:                setBaseType(baseQName, ct);
386:                return ct;
387:            }
388:
389:            /**
390:             * Get arrayItemType without brackets to just get type.
391:             */
392:            String removeBrackets(String arrayItemType) {
393:                int index = arrayItemType.indexOf('[');
394:                if (index == -1) {
395:                    return arrayItemType;
396:                }
397:                return arrayItemType.substring(0, index);
398:            }
399:
400:            /**
401:             * Check for elements inside <all> or sequence. All elements must have a type
402:             * attribute. We don't support anonymous types.
403:             */
404:            ComplexType checkAllOrSequence(String name, Element node)
405:                    throws Exception {
406:                if (mLogger.isDebugEnabled()) {
407:                    mLogger.debug("checkAllOrSequence: " + name + ", " + node);
408:                }
409:
410:                String tag = node.getTagName();
411:                Map members = new HashMap();
412:                NodeList list = node.getElementsByTagNameNS(
413:                        mNamespaceURI_SCHEMA_XSD, "element");
414:                for (int i = 0; i < list.getLength(); i++) {
415:                    Element element = (Element) list.item(i);
416:                    String elRef = element.getAttribute("ref");
417:                    String elName = element.getAttribute("name");
418:                    String elType = element.getAttribute("type");
419:                    if (!elRef.equals("")) {
420:                        mLogger.warn("!!! skipping element #" + (i + 1)
421:                                + " !!! " + "references ignored");
422:                        continue;
423:                    } else {
424:                        if (elName.equals("")) {
425:                            mLogger.warn("!!! skipping element #" + (i + 1)
426:                                    + " !!! "
427:                                    + "name attribute missing in inside <"
428:                                    + tag + ">: " + node);
429:                            continue;
430:                        }
431:                        if (elType.equals("")) {
432:                            mLogger.warn("!!! skipping element #" + (i + 1)
433:                                    + " !!! "
434:                                    + "type attribute missing inside <" + tag
435:                                    + ">: " + node
436:                                    + "(anonymous types not supported)");
437:                            continue;
438:                        }
439:                    }
440:                    QName elTypeQName = XMLUtils.getQNameFromString(elType,
441:                            element);
442:                    members.put(elName, elTypeQName);
443:                }
444:
445:                // struct complex type
446:                return new ComplexType(new QName(mTargetNamespaceURI, name),
447:                        members);
448:            }
449:
450:            /**
451:             * See if complexType element was found.
452:             */
453:            boolean foundOne(NodeList list) {
454:                return list.getLength() == 1;
455:            }
456:        }
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