svn-gvsig-desktop / branches / v2_0_0_prep / libraries / libTools / src / org / gvsig / tools / persistence / xml / XMLPersistentStateWriter.java @ 30619
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/* gvSIG. Geographic Information System of the Valencian Government
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*
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* Copyright (C) 2007-2008 Infrastructures and Transports Department
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* of the Valencian Government (CIT)
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
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* MA 02110-1301, USA.
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*
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*/
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/*
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* AUTHORS (In addition to CIT):
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* 2009 IVER T.I {{Task}}
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*/
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/**
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*
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*/
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package org.gvsig.tools.persistence.xml; |
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import java.io.OutputStream; |
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import java.io.OutputStreamWriter; |
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import java.io.PrintWriter; |
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import java.lang.reflect.Method; |
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import java.text.MessageFormat; |
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import java.util.Date; |
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import java.util.Iterator; |
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import java.util.List; |
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import java.util.Map; |
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import java.util.Set; |
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import java.util.Map.Entry; |
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import java.util.regex.Pattern; |
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import org.gvsig.tools.persistence.PersistenceException; |
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import org.gvsig.tools.persistence.PersistenceTypeNotSupportedException; |
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import org.gvsig.tools.persistence.impl.ImplementationPersistentState; |
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import org.gvsig.tools.persistence.impl.ObjectReference; |
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import org.gvsig.tools.persistence.impl.PersistentContext; |
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/**
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* @author jmvivo
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*
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*/
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public class XMLPersistentStateWriter implements XMLPersistentConstants { |
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private XMLPersistenceManager manager;
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private PrintWriter print; |
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private static Method getCharSetMethod = null; |
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private static Method getCharSetNameMethod = null; |
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private static boolean useCsMap = false; |
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private static boolean useDomains = false; |
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private final static Pattern DOT_PATTERN = Pattern.compile("[.]"); |
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public XMLPersistentStateWriter(XMLPersistenceManager persistenceManager) {
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this.manager = persistenceManager;
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} |
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public void write(ImplementationPersistentState state, OutputStream out) |
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throws PersistenceException {
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write(state, out, null);
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} |
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public void write(ImplementationPersistentState state, OutputStream out, |
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Map domains)
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throws PersistenceException {
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ImplementationPersistentState root = state; |
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String rootId = root.getId().toString();
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PersistentContext context = state.getContext(); |
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OutputStreamWriter outWrite = new OutputStreamWriter(out); |
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print = new PrintWriter(out); |
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// XML header (<?xml ....?>)
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print.println(MessageFormat.format(XML_HEADER,
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new String[] { getCharset(outWrite.getEncoding()) })); |
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// Prepare schema
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String rootAttributes = ""; |
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if (domains != null && domains.size() > 0) { |
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useDomains = true;
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StringBuffer buffRootAttr = new StringBuffer(); |
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buffRootAttr.append('\n');
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buffRootAttr.append(MessageFormat.format(
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DOMAIN_NAME_ATTRIBUTE_VALUE, new Object[] { |
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BASE_DOMIAN_NAME, BASE_DOMIAN_URL })); |
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Iterator iter = domains.entrySet().iterator();
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Entry entry; |
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while (iter.hasNext()) {
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entry = (Entry) iter.next(); |
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buffRootAttr.append('\n');
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buffRootAttr.append(MessageFormat.format(DOMAIN_NAME_ATTRIBUTE_VALUE,
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new Object[] { entry.getKey(), entry.getValue() })); |
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} |
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iter = domains.entrySet().iterator(); |
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StringBuffer buffSchemas = new StringBuffer(); |
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buffSchemas.append('\n');
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buffSchemas.append(MessageFormat.format(SCHEMA_DEFINITON_VALUE,
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new Object[] { BASE_DOMIAN_NAME, BASE_DOMIAN_URL })); |
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while (iter.hasNext()) {
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entry = (Entry) iter.next(); |
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buffSchemas.append('\n');
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buffSchemas.append(MessageFormat.format(SCHEMA_DEFINITON_VALUE,
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new Object[] { entry.getValue(), entry.getKey() })); |
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} |
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buffRootAttr.append('\n');
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buffRootAttr.append(MessageFormat.format(DEFAULT_SCHEMA_ATTRIBUTE_VALUE,
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new Object[] { buffSchemas.toString() })); |
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rootAttributes = buffRootAttr.toString(); |
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} |
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// Root tag:
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// if (useDomains) {
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// print.println(MessageFormat.format(ROOT_VALUE, new Object[] {
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// BASE_DOMIAN_NAME + ":", rootAttributes }));
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// } else {
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print.println(MessageFormat.format(ROOT_VALUE,
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new Object[] { "", |
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rootAttributes })); |
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// }
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// Version
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print.println(MessageFormat.format(VERSION_VALUE,
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new Object[] { manager.version() })); |
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// add root state id
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print.println(MessageFormat.format(ROOTSTATE_VALUE,
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new String[] { rootId })); |
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ImplementationPersistentState curState; |
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Iterator itStates = context.statesIterator();
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// States tag:
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print.println(STATES_START); |
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// iter all states
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while (itStates.hasNext()) {
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curState = (ImplementationPersistentState) itStates.next(); |
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writeState(curState); |
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} |
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// States end:
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print.println(STATES_END); |
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// Root end:
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// if (useDomains) {
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// print.println(MessageFormat.format(ROOT_END_VALUE,
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// new Object[] { BASE_DOMIAN_NAME + ":" }));
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// } else {
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print.println(MessageFormat.format(ROOT_END_VALUE,
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new Object[] { "" })); |
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// }
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print.flush(); |
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} |
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private void writeState(ImplementationPersistentState curState) |
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throws PersistenceException {
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Iterator itNames;
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String name;
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Object value;
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itNames = curState.getNames(); |
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String theClassName = curState.getTheClassName();
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String domainName = ""; |
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if (useDomains) {
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domainName = manager.getDomainName(theClassName) + ":";
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} |
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// add state start
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print.println(MessageFormat.format(STATE_START, new Object[] { |
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domainName, theClassName, curState.getId() })); |
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boolean useNameAsTag;
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String format, type;
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StringBuffer strb;
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// iter all property names
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while (itNames.hasNext()) {
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name = (String) itNames.next();
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value = curState.getInternal(name); |
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strb = new StringBuffer(); |
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type = transformValue(value, strb); |
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useNameAsTag = VALID_TAG_PATTERN.matcher(name).matches(); |
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if (useNameAsTag) {
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format = VALUE_ITEM; |
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} else {
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format = VALUE_ITEM_GENERIC; |
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} |
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print.println(MessageFormat.format(format, new String[] { name, |
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type, strb.toString() })); |
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} |
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// add state end
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print.println(MessageFormat.format(STATE_END, new Object[] { |
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domainName, theClassName, curState.getId() })); |
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} |
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private String transformValue(Object value, StringBuffer strb) |
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throws PersistenceTypeNotSupportedException {
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if (value instanceof String) { |
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return transformValue((String) value, strb); |
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} else if (value instanceof Number) { |
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return transformValue((Number) value, strb); |
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} else if (value instanceof ObjectReference) { |
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return transformValue((ObjectReference) value, strb);
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} else if (value instanceof List) { |
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return transformValue((List) value, strb); |
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} else if (value instanceof Set) { |
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return transformValue((Set) value, strb); |
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} else if (value instanceof Map) { |
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return transformValue((Map) value, strb); |
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} else if (value instanceof Boolean) { |
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return transformValue((Boolean) value, strb); |
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} else if (value instanceof Date) { |
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return transformValue((Date) value, strb); |
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} else if (value == null) { |
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return transformNullValue(strb);
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} else {
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throw new PersistenceTypeNotSupportedException(value.getClass()); |
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} |
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} |
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private String transformValue(String value, StringBuffer strb) { |
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boolean cdata = false; |
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if (!VALID_VALUE_PATTERN.matcher(value).matches()) {
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cdata = true;
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strb.append(CDATA_START); |
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} |
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strb.append(value); |
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if (cdata) {
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strb.append(CDATA_END); |
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} |
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return TYPE_STRING;
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} |
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private String transformNullValue(StringBuffer strb) { |
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return TYPE_NULL;
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} |
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private String transformValue(Number value, StringBuffer strb) { |
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strb.append(value); |
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String[] classname = split(value.getClass().getName(), DOT_PATTERN); |
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return classname[classname.length - 1]; |
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} |
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private String[] split(String txt, String pattern) { |
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return Pattern.compile(pattern).split(txt, 0); |
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} |
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private String[] split(String txt, Pattern pattern) { |
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return pattern.split(txt, 0); |
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} |
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private String transformValue(Boolean value, StringBuffer strb) { |
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strb.append(value); |
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return TYPE_BOOLEAN;
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} |
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private String transformValue(Date value, StringBuffer strb) { |
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strb.append(value.getTime()); |
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return TYPE_DATE;
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} |
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private String transformValue(ObjectReference value, StringBuffer strb) { |
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strb.append(MessageFormat.format(REFERENCE_VALUE, new Object[] { value |
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.getId() })); |
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return TYPE_REFERENCE;
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} |
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private String transformValue(List value, StringBuffer strb) |
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throws PersistenceTypeNotSupportedException {
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Iterator iter = value.iterator();
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String type;
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StringBuffer itemStrb;
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while (iter.hasNext()) {
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itemStrb = new StringBuffer(); |
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type = transformValue(iter.next(), itemStrb); |
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strb.append(MessageFormat.format(LISTITEM_VALUE, new String[] { |
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type, itemStrb.toString() })); |
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strb.append('\n');
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} |
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return "List"; |
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} |
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private String transformValue(Set value, StringBuffer strb) |
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throws PersistenceTypeNotSupportedException {
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Iterator iter = value.iterator();
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String type;
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StringBuffer itemStrb;
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while (iter.hasNext()) {
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itemStrb = new StringBuffer(); |
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type = transformValue(iter.next(), itemStrb); |
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strb.append(MessageFormat.format(SETITEM_VALUE, new String[] { |
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type, itemStrb.toString() })); |
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} |
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return "Set"; |
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} |
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private String transformValue(Map value, StringBuffer strb) |
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throws PersistenceTypeNotSupportedException {
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Iterator iter = value.entrySet().iterator();
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Entry entry; |
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String keyType, valueType;
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StringBuffer valueStrb, keyStrb;
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while (iter.hasNext()) {
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entry = (Entry) iter.next(); |
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// transform key
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keyStrb = new StringBuffer(); |
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keyType = transformValue(entry.getKey(), keyStrb); |
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// transform value
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valueStrb = new StringBuffer(); |
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valueType = transformValue(entry.getValue(), valueStrb); |
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strb.append(MessageFormat.format(MAPITEM_VALUE, new String[] { |
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keyType, keyStrb.toString(), valueType, |
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valueStrb.toString() })); |
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} |
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return "Map"; |
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} |
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private String getCharsetByNio(String csName) { |
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Object charSet;
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if (getCharSetNameMethod == null) { |
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Class charsetClass = null; |
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try {
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charsetClass = Class.forName("java.nio.charset.Charset"); |
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} catch (ClassNotFoundException e) { |
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useCsMap = true;
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return null; |
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} |
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try {
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getCharSetMethod = charsetClass.getMethod("forName",
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new Class[] { String.class }); |
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} catch (Exception e) { |
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useCsMap = true;
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return null; |
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} |
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try {
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getCharSetNameMethod = charsetClass.getMethod("displayName",
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new Class[] {}); |
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} catch (Exception e) { |
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useCsMap = true;
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return null; |
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} |
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} |
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try {
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charSet = getCharSetMethod.invoke(null, new Object[] { csName }); |
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} catch (Exception e) { |
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useCsMap = true;
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return null; |
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} |
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try {
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return (String) getCharSetNameMethod.invoke(charSet, |
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new Object[] {}); |
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} catch (Exception e) { |
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useCsMap = true;
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return null; |
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} |
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} |
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private String getCharset(String csName) { |
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if (!useCsMap) {
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String name = this.getCharsetByNio(csName); |
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if (name != null) { |
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return name;
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} |
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} |
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return (String) ChasetMap.getMap().get(csName); |
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} |
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} |