Source Code Cross Referenced for TinyDocumentImpl.java in  » XML » saxonb » net » sf » saxon » tinytree » Java Source Code / Java DocumentationJava Source Code and Java Documentation

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Java Source Code / Java Documentation » XML » saxonb » net.sf.saxon.tinytree 
Source Cross Referenced  Class Diagram Java Document (Java Doc) 


001:        package net.sf.saxon.tinytree;
002:
003:        import net.sf.saxon.Configuration;
004:        import net.sf.saxon.sort.IntHashMap;
005:        import net.sf.saxon.event.Receiver;
006:        import net.sf.saxon.om.*;
007:        import net.sf.saxon.trans.XPathException;
008:        import net.sf.saxon.type.Type;
009:
010:        import java.util.ArrayList;
011:        import java.util.HashMap;
012:        import java.util.List;
013:
014:        /**
015:         * A node in the XML parse tree representing the Document itself (or equivalently, the root
016:         * node of the Document).<P>
017:         */
018:
019:        public final class TinyDocumentImpl extends TinyParentNodeImpl
020:                implements  DocumentInfo {
021:
022:            private HashMap idTable = null;
023:            private IntHashMap elementList = null;
024:            private HashMap entityTable = null;
025:
026:            public TinyDocumentImpl(TinyTree tree) {
027:                this .tree = tree;
028:            }
029:
030:            /**
031:             * Get the tree containing this node
032:             */
033:
034:            public TinyTree getTree() {
035:                return tree;
036:            }
037:
038:            /**
039:             * Set the Configuration that contains this document
040:             */
041:
042:            public void setConfiguration(Configuration config) {
043:                if (config != tree.getConfiguration()) {
044:                    throw new IllegalArgumentException(
045:                            "Configuration of document differs from that of the supporting TinyTree");
046:                }
047:            }
048:
049:            /**
050:             * Get the configuration previously set using setConfiguration
051:             */
052:
053:            public Configuration getConfiguration() {
054:                return tree.getConfiguration();
055:            }
056:
057:            /**
058:             * Set the system id of this node
059:             */
060:
061:            public void setSystemId(String uri) {
062:                tree.setSystemId(nodeNr, uri);
063:            }
064:
065:            /**
066:             * Get the system id of this root node
067:             */
068:
069:            public String getSystemId() {
070:                return tree.getSystemId(nodeNr);
071:            }
072:
073:            /**
074:             * Get the base URI of this root node. For a root node the base URI is the same as the
075:             * System ID.
076:             */
077:
078:            public String getBaseURI() {
079:                return getSystemId();
080:            }
081:
082:            /**
083:             * Get the line number of this root node.
084:             * @return 0 always
085:             */
086:
087:            public int getLineNumber() {
088:                return 0;
089:            }
090:
091:            /**
092:             * Return the type of node.
093:             * @return Type.DOCUMENT (always)
094:             */
095:
096:            public final int getNodeKind() {
097:                return Type.DOCUMENT;
098:            }
099:
100:            /**
101:             * Find the parent node of this node.
102:             * @return The Node object describing the containing element or root node.
103:             */
104:
105:            public NodeInfo getParent() {
106:                return null;
107:            }
108:
109:            /**
110:             * Get the root node
111:             * @return the NodeInfo that is the root of the tree - not necessarily a document node
112:             */
113:
114:            public NodeInfo getRoot() {
115:                return this ;
116:            }
117:
118:            /**
119:             * Get the root (document) node
120:             * @return the DocumentInfo representing the document node, or null if the
121:             * root of the tree is not a document node
122:             */
123:
124:            public DocumentInfo getDocumentRoot() {
125:                return this ;
126:            }
127:
128:            /**
129:             * Get a character string that uniquely identifies this node
130:             * @return an identifier based on the document number
131:             */
132:
133:            public String generateId() {
134:                return "d" + getDocumentNumber();
135:            }
136:
137:            /**
138:             * Get a list of all elements with a given name. This is implemented
139:             * as a memo function: the first time it is called for a particular
140:             * element type, it remembers the result for next time.
141:             */
142:
143:            AxisIterator getAllElements(int fingerprint) {
144:                //Integer key = new Integer(fingerprint);
145:                if (elementList == null) {
146:                    elementList = new IntHashMap(20);
147:                }
148:                List list = (List) elementList.get(fingerprint);
149:                if (list == null) {
150:                    list = getElementList(fingerprint);
151:                    elementList.put(fingerprint, list);
152:                }
153:                return new ListIterator(list);
154:            }
155:
156:            /**
157:             * Get a list containing all the elements with a given element name
158:             * @param fingerprint the fingerprint of the element name
159:             * @return list a List containing the TinyElementImpl objects
160:             */
161:
162:            List getElementList(int fingerprint) {
163:                List list = new ArrayList(tree.getNumberOfNodes() / 20);
164:                int i = nodeNr + 1;
165:                while (tree.depth[i] != 0) {
166:                    if (tree.nodeKind[i] == Type.ELEMENT
167:                            && (tree.nameCode[i] & 0xfffff) == fingerprint) {
168:                        list.add(tree.getNode(i));
169:                    }
170:                    i++;
171:                }
172:                return list;
173:            }
174:
175:            /**
176:             * Register a unique element ID. Fails if there is already an element with that ID.
177:             * @param e The NodeInfo (always an element) having a particular unique ID value
178:             * @param id The unique ID value. The caller is responsible for checking that this
179:             * is a valid NCName.
180:             */
181:
182:            void registerID(NodeInfo e, String id) {
183:                if (idTable == null) {
184:                    idTable = new HashMap(256);
185:                }
186:
187:                // the XPath spec (5.2.1) says ignore the second ID if it's not unique
188:                NodeInfo old = (NodeInfo) idTable.get(id);
189:                if (old == null) {
190:                    idTable.put(id, e);
191:                }
192:
193:            }
194:
195:            /**
196:             * Get the element with a given ID.
197:             * @param id The unique ID of the required element, previously registered using registerID()
198:             * @return The NodeInfo (always an Element) for the given ID if one has been registered,
199:             * otherwise null.
200:             */
201:
202:            public NodeInfo selectID(String id) {
203:                if (idTable == null)
204:                    return null; // no ID values found
205:                return (NodeInfo) idTable.get(id);
206:            }
207:
208:            /**
209:             * Set an unparsed entity URI associated with this document. For system use only, while
210:             * building the document.
211:             */
212:
213:            void setUnparsedEntity(String name, String uri, String publicId) {
214:                if (entityTable == null) {
215:                    entityTable = new HashMap(20);
216:                }
217:                String[] ids = new String[2];
218:                ids[0] = uri;
219:                ids[1] = publicId;
220:                entityTable.put(name, ids);
221:            }
222:
223:            /**
224:             * Get the unparsed entity with a given nameID if there is one, or null if not. If the entity
225:             * does not exist, return null.
226:             * @param name the name of the entity
227:             * @return if the entity exists, return an array of two Strings, the first holding the system ID
228:             * of the entity, the second holding the public
229:             */
230:
231:            public String[] getUnparsedEntity(String name) {
232:                if (entityTable == null) {
233:                    return null;
234:                }
235:                return (String[]) entityTable.get(name);
236:            }
237:
238:            /**
239:             * Copy this node to a given outputter
240:             */
241:
242:            public void copy(Receiver out, int whichNamespaces,
243:                    boolean copyAnnotations, int locationId)
244:                    throws XPathException {
245:
246:                out.startDocument(0);
247:
248:                // output the children
249:
250:                AxisIterator children = iterateAxis(Axis.CHILD);
251:                while (true) {
252:                    NodeInfo n = (NodeInfo) children.next();
253:                    if (n == null) {
254:                        break;
255:                    }
256:                    n.copy(out, whichNamespaces, copyAnnotations, locationId);
257:                }
258:
259:                out.endDocument();
260:            }
261:
262:            public void showSize() {
263:                tree.showSize();
264:            }
265:
266:        }
267:
268:        //
269:        // The contents of this file are subject to the Mozilla Public License Version 1.0 (the "License");
270:        // you may not use this file except in compliance with the License. You may obtain a copy of the
271:        // License at http://www.mozilla.org/MPL/
272:        //
273:        // Software distributed under the License is distributed on an "AS IS" basis,
274:        // WITHOUT WARRANTY OF ANY KIND, either express or implied.
275:        // See the License for the specific language governing rights and limitations under the License.
276:        //
277:        // The Original Code is: all this file
278:        //
279:        // The Initial Developer of the Original Code is Michael H. Kay.
280:        //
281:        // Contributor(s):
282:        //
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