Source Code Cross Referenced for OracleServiceImpl.java in  » GIS » udig-1.1 » net » refractions » udig » catalog » internal » oracle » Java Source Code / Java DocumentationJava Source Code and Java Documentation

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Java Source Code / Java Documentation » GIS » udig 1.1 » net.refractions.udig.catalog.internal.oracle 
Source Cross Referenced  Class Diagram Java Document (Java Doc) 


001:        /*
002:         *    uDig - User Friendly Desktop Internet GIS client
003:         *    http://udig.refractions.net
004:         *    (C) 2004, Refractions Research Inc.
005:         *
006:         *    This library is free software; you can redistribute it and/or
007:         *    modify it under the terms of the GNU Lesser General Public
008:         *    License as published by the Free Software Foundation;
009:         *    version 2.1 of the License.
010:         *
011:         *    This library is distributed in the hope that it will be useful,
012:         *    but WITHOUT ANY WARRANTY; without even the implied warranty of
013:         *    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
014:         *    Lesser General Public License for more details.
015:         *
016:         */
017:        package net.refractions.udig.catalog.internal.oracle;
018:
019:        import java.io.IOException;
020:        import java.io.Serializable;
021:        import java.net.URI;
022:        import java.net.URISyntaxException;
023:        import java.net.URL;
024:        import java.util.LinkedList;
025:        import java.util.List;
026:        import java.util.Map;
027:        import java.util.concurrent.locks.Lock;
028:
029:        import net.refractions.udig.catalog.CatalogPlugin;
030:        import net.refractions.udig.catalog.IResolve;
031:        import net.refractions.udig.catalog.IResolveChangeEvent;
032:        import net.refractions.udig.catalog.IResolveDelta;
033:        import net.refractions.udig.catalog.IService;
034:        import net.refractions.udig.catalog.IServiceInfo;
035:        import net.refractions.udig.catalog.internal.CatalogImpl;
036:        import net.refractions.udig.catalog.internal.ResolveChangeEvent;
037:        import net.refractions.udig.catalog.internal.ResolveDelta;
038:        import net.refractions.udig.catalog.oracle.internal.Messages;
039:        import net.refractions.udig.ui.ErrorManager;
040:        import net.refractions.udig.ui.UDIGDisplaySafeLock;
041:
042:        import org.eclipse.core.runtime.IProgressMonitor;
043:        import org.eclipse.core.runtime.NullProgressMonitor;
044:        import org.eclipse.core.runtime.SubProgressMonitor;
045:        import org.geotools.data.oracle.OracleDataStore;
046:        import org.geotools.data.oracle.OracleDataStoreFactory;
047:
048:        /**
049:         * Provides ...TODO summary sentence
050:         * <p>
051:         * TODO Description
052:         * </p>
053:         * @author David Zwiers, Refractions Research
054:         * @since 0.6
055:         */
056:        public class OracleServiceImpl extends IService {
057:
058:            private URL url = null;
059:            private Map<String, Serializable> params = null;
060:
061:            public OracleServiceImpl(URL arg1, Map<String, Serializable> arg2) {
062:                url = arg1;
063:                params = arg2;
064:                checkPort(params);
065:            }
066:
067:            /*
068:             * Required adaptions:
069:             * <ul>
070:             * <li>IServiceInfo.class
071:             * <li>List.class <IGeoResource>
072:             * </ul>
073:             * 
074:             * @see net.refractions.udig.catalog.IService#resolve(java.lang.Class, org.eclipse.core.runtime.IProgressMonitor)
075:             */
076:            public <T> T resolve(Class<T> adaptee, IProgressMonitor monitor)
077:                    throws IOException {
078:                if (monitor == null)
079:                    monitor = new NullProgressMonitor();
080:
081:                if (adaptee == null) {
082:                    throw new NullPointerException("No adaptor specified"); //$NON-NLS-1$
083:                }
084:
085:                if (adaptee.isAssignableFrom(OracleDataStore.class)) {
086:                    return adaptee.cast(getDS(monitor));
087:                }
088:                return super .resolve(adaptee, monitor);
089:            }
090:
091:            /*
092:             * @see net.refractions.udig.catalog.IResolve#canResolve(java.lang.Class)
093:             */
094:            public <T> boolean canResolve(Class<T> adaptee) {
095:                if (adaptee == null)
096:                    return false;
097:                return (adaptee.isAssignableFrom(OracleDataStore.class))
098:                        || super .canResolve(adaptee);
099:            }
100:
101:            public void dispose(IProgressMonitor monitor) {
102:                if (members == null)
103:                    return;
104:
105:                int steps = (int) ((double) 99 / (double) members.size());
106:                for (IResolve resolve : members) {
107:                    try {
108:                        SubProgressMonitor subProgressMonitor = new SubProgressMonitor(
109:                                monitor, steps);
110:                        resolve.dispose(subProgressMonitor);
111:                        subProgressMonitor.done();
112:                    } catch (Throwable e) {
113:                        ErrorManager
114:                                .get()
115:                                .displayException(
116:                                        e,
117:                                        "Error disposing members of service: " + getIdentifier(), CatalogPlugin.ID); //$NON-NLS-1$
118:                    }
119:                }
120:            }
121:
122:            /*
123:             * @see net.refractions.udig.catalog.IResolve#members(org.eclipse.core.runtime.IProgressMonitor)
124:             */
125:            public List<OracleGeoResource> members(IProgressMonitor monitor)
126:                    throws IOException {
127:
128:                if (members == null) {
129:                    rLock.lock();
130:                    try {
131:                        if (members == null) {
132:                            getDS(monitor); // load ds
133:                            members = new LinkedList<OracleGeoResource>();
134:                            String[] typenames = ds.getTypeNames();
135:                            if (typenames != null)
136:                                for (int i = 0; i < typenames.length; i++) {
137:                                    members.add(new OracleGeoResource(this ,
138:                                            typenames[i]));
139:                                }
140:                        }
141:                    } finally {
142:                        rLock.unlock();
143:                    }
144:                }
145:                return members;
146:            }
147:
148:            private volatile List<OracleGeoResource> members = null;
149:
150:            /*
151:             * @see net.refractions.udig.catalog.IService#getInfo(org.eclipse.core.runtime.IProgressMonitor)
152:             */
153:            public IServiceInfo getInfo(IProgressMonitor monitor)
154:                    throws IOException {
155:                getDS(monitor); // load ds
156:                if (info == null && ds != null) {
157:                    rLock.lock();
158:                    try {
159:                        if (info == null) {
160:                            info = new IServiceOracleInfo(ds);
161:                        }
162:                    } finally {
163:                        rLock.unlock();
164:                    }
165:                    IResolveDelta delta = new ResolveDelta(this ,
166:                            IResolveDelta.Kind.CHANGED);
167:                    ((CatalogImpl) CatalogPlugin.getDefault().getLocalCatalog())
168:                            .fire(new ResolveChangeEvent(this ,
169:                                    IResolveChangeEvent.Type.POST_CHANGE, delta));
170:                }
171:                return info;
172:            }
173:
174:            private volatile IServiceInfo info = null;
175:
176:            /*
177:             * @see net.refractions.udig.catalog.IService#getConnectionParams()
178:             */
179:            public Map<String, Serializable> getConnectionParams() {
180:                return params;
181:            }
182:
183:            private Throwable msg = null;
184:            private volatile OracleDataStore ds = null;
185:            protected Lock rLock = new UDIGDisplaySafeLock();
186:            private static final Lock dsLock = new UDIGDisplaySafeLock();
187:
188:            OracleDataStore getDS(IProgressMonitor monitor) throws IOException {
189:                if (ds == null) {
190:                    dsLock.lock();
191:                    try {
192:                        if (ds == null) {
193:                            OracleDataStoreFactory dsf = new OracleDataStoreFactory();
194:                            checkPort(params);
195:                            assert params.get("port") instanceof  String; //$NON-NLS-1$
196:                            if (dsf.canProcess(params)) {
197:                                try {
198:                                    ds = (OracleDataStore) dsf
199:                                            .createDataStore(params);
200:                                } catch (IOException e) {
201:                                    msg = e;
202:                                    throw e;
203:                                }
204:                            }
205:                        }
206:                    } finally {
207:                        dsLock.unlock();
208:                    }
209:                    IResolveDelta delta = new ResolveDelta(this ,
210:                            IResolveDelta.Kind.CHANGED);
211:                    ((CatalogImpl) CatalogPlugin.getDefault().getLocalCatalog())
212:                            .fire(new ResolveChangeEvent(this ,
213:                                    IResolveChangeEvent.Type.POST_CHANGE, delta));
214:                }
215:                return ds;
216:            }
217:
218:            /*
219:             * @see net.refractions.udig.catalog.IResolve#getStatus()
220:             */
221:            public Status getStatus() {
222:                return msg != null ? Status.BROKEN
223:                        : ds == null ? Status.NOTCONNECTED : Status.CONNECTED;
224:            }
225:
226:            /*
227:             * @see net.refractions.udig.catalog.IResolve#getMessage()
228:             */
229:            public Throwable getMessage() {
230:                return msg;
231:            }
232:
233:            /*
234:             * @see net.refractions.udig.catalog.IResolve#getIdentifier()
235:             */
236:            public URL getIdentifier() {
237:                return url;
238:            }
239:
240:            private class IServiceOracleInfo extends IServiceInfo {
241:
242:                IServiceOracleInfo(OracleDataStore resource) {
243:                    super ();
244:                    String[] tns = null;
245:                    try {
246:                        tns = resource.getTypeNames();
247:                    } catch (IOException e) {
248:                        OraclePlugin.log(null, e);
249:                        tns = new String[0];
250:                    }
251:                    keywords = new String[tns.length + 1];
252:                    System.arraycopy(tns, 0, keywords, 1, tns.length);
253:                    keywords[0] = "oracle"; //$NON-NLS-1$
254:
255:                    try {
256:                        schema = new URI("jdbc://oracle/gml"); //$NON-NLS-1$
257:                    } catch (URISyntaxException e) {
258:                        OraclePlugin.log(null, e);
259:                    }
260:                }
261:
262:                public String getDescription() {
263:                    return getIdentifier().toString();
264:                }
265:
266:                public URL getSource() {
267:                    return getIdentifier();
268:                }
269:
270:                public String getTitle() {
271:                    return Messages.OracleServiceImpl_oracle_spatial
272:                            + getIdentifier().getHost();
273:                }
274:            }
275:
276:            /**
277:             * Checks to make sure the port hasn't been switched from String to Integer and corrects if necessary.
278:             *
279:             * @param params Parameters object
280:             */
281:            private void checkPort(Map<String, Serializable> params) {
282:                String portKey = OracleServiceExtension.getFactory()
283:                        .getParametersInfo()[2].key;
284:                if (params != null && params.containsKey(portKey)
285:                        && params.get(portKey) instanceof  Integer) {
286:                    Integer val = (Integer) params.get(portKey);
287:                    params.remove(portKey);
288:                    params.put(portKey, val.toString());
289:                }
290:            }
291:        }
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