Source Code Cross Referenced for TemporaryNodeManager.java in  » Database-ORM » MMBase » org » mmbase » module » core » Java Source Code / Java DocumentationJava Source Code and Java Documentation

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Java Source Code / Java Documentation » Database ORM » MMBase » org.mmbase.module.core 
Source Cross Referenced  Class Diagram Java Document (Java Doc) 


001:        /*
002:
003:        This software is OSI Certified Open Source Software.
004:        OSI Certified is a certification mark of the Open Source Initiative.
005:
006:        The license (Mozilla version 1.0) can be read at the MMBase site.
007:        See http://www.MMBase.org/license
008:
009:         */
010:        package org.mmbase.module.core;
011:
012:        import org.mmbase.bridge.Field;
013:        import org.mmbase.module.corebuilders.RelDef;
014:
015:        import org.mmbase.util.logging.Logger;
016:        import org.mmbase.util.logging.Logging;
017:        import org.mmbase.util.Casting;
018:
019:        /**
020:         * @javadoc
021:         *
022:         * @author Rico Jansen
023:         * @version $Id: TemporaryNodeManager.java,v 1.52 2007/05/14 14:46:40 michiel Exp $
024:         */
025:        public class TemporaryNodeManager {
026:
027:            private static final Logger log = Logging
028:                    .getLoggerInstance(TemporaryNodeManager.class);
029:
030:            /**
031:             * Return value for setObjectField
032:             */
033:            public static final String UNKNOWN = "unknown";
034:            /**
035:             * @since MMBase-1.8
036:             */
037:            public static final String INVALID_VALUE = "invalid value";
038:
039:            private final MMBase mmbase;
040:
041:            /**
042:             * @javadoc
043:             */
044:            TemporaryNodeManager(MMBase mmbase) {
045:                this .mmbase = mmbase;
046:            }
047:
048:            /**
049:             * @javadoc
050:             */
051:            public String createTmpNode(String type, String owner, String key) {
052:                if (log.isDebugEnabled()) {
053:                    log.debug("createTmpNode : type=" + type + " owner="
054:                            + owner + " key=" + key);
055:                }
056:                // WTF!?
057:                //        if (owner.length() > 12) owner = owner.substring(0, 12);
058:                MMObjectBuilder builder = mmbase.getBuilder(type);
059:                MMObjectNode node;
060:                if (builder != null) {
061:                    node = builder.getNewTmpNode(owner, getTmpKey(owner, key));
062:                    if (log.isDebugEnabled()) {
063:                        log.debug("New tmpnode " + node);
064:                    }
065:                } else {
066:                    log.error("Can't find builder " + type);
067:                }
068:                return key;
069:            }
070:
071:            /**
072:             * @javadoc
073:             */
074:            public String createTmpRelationNode(String role, String owner,
075:                    String key, String source, String destination)
076:                    throws Exception {
077:                // decode type to a builder using reldef
078:                RelDef reldef = mmbase.getRelDef();
079:                int rnumber = reldef.getNumberByName(role, true);
080:                if (rnumber == -1) {
081:                    throw new Exception("role " + role
082:                            + " is not a proper relation");
083:                }
084:                MMObjectBuilder builder = reldef.getBuilder(reldef
085:                        .getNode(rnumber));
086:                String bulname = builder.getTableName();
087:
088:                // Create node
089:                createTmpNode(bulname, owner, key);
090:                setObjectField(owner, key, "_snumber", getTmpKey(owner, source));
091:                setObjectField(owner, key, "_dnumber", getTmpKey(owner,
092:                        destination));
093:                setObjectField(owner, key, "rnumber", "" + rnumber);
094:                return key;
095:            }
096:
097:            /**
098:             * @javadoc
099:             */
100:            public String createTmpAlias(String name, String owner, String key,
101:                    String destination) {
102:                MMObjectBuilder builder = mmbase.getOAlias();
103:                String bulname = builder.getTableName();
104:
105:                // Create alias node
106:                createTmpNode(bulname, owner, key);
107:                setObjectField(owner, key, "_destination", getTmpKey(owner,
108:                        destination));
109:                setObjectField(owner, key, "name", name);
110:                return key;
111:            }
112:
113:            /**
114:             * @javadoc
115:             */
116:            public String deleteTmpNode(String owner, String key) {
117:                MMObjectBuilder b = mmbase.getBuilder("object");
118:                b.removeTmpNode(getTmpKey(owner, key));
119:                if (log.isDebugEnabled()) {
120:                    log.debug("delete node " + getTmpKey(owner, key));
121:                }
122:                return key;
123:            }
124:
125:            /**
126:             * @javadoc
127:             */
128:            public MMObjectNode getNode(String owner, String key) {
129:                MMObjectBuilder bul = mmbase.getBuilder("object");
130:                String tmpKey = getTmpKey(owner, key);
131:                MMObjectNode node = bul.getTmpNode(tmpKey);
132:                // fallback to normal nodes
133:                if (node == null) {
134:                    log.debug("getNode tmp not node found " + key);
135:                    node = bul.getNode(key);
136:                    if (node == null)
137:                        throw new RuntimeException("Node not found !! (key = '"
138:                                + key + "' nor tmpKey = " + tmpKey + ")");
139:                }
140:                return node;
141:            }
142:
143:            /**
144:             * @javadoc
145:             */
146:            public String getObject(String owner, String key, String dbkey) {
147:                MMObjectNode node = MMObjectBuilder.getTmpNode(getTmpKey(owner,
148:                        key));
149:                if (node == null) {
150:                    log.debug("getObject not tmp node found " + key);
151:                    MMObjectBuilder bul = mmbase.getBuilder("object");
152:                    node = bul.getNode(dbkey, false);
153:                    if (node == null) {
154:                        log.warn("Node not found in database " + dbkey);
155:                    } else {
156:                        MMObjectBuilder.putTmpNode(getTmpKey(owner, key), node);
157:                    }
158:                }
159:                if (node != null) {
160:                    return key;
161:                } else {
162:                    return null;
163:                }
164:            }
165:
166:            /**
167:             * @javadoc
168:             * @return An empty string if succesfull, the string {@link #UNKNOWN} if the field was not found in the node.
169:             *         The string {@link #INVALID_VALUE} if the value was not valid for the field's type.
170:             */
171:            public String setObjectField(String owner, String key,
172:                    String field, Object value) {
173:                MMObjectNode node = getNode(owner, key);
174:                if (node != null) {
175:                    int type = node.getDBType(field);
176:                    if (type >= 0) {
177:                        if (value instanceof  String) {
178:                            String stringValue = (String) value;
179:                            switch (type) {
180:                            case Field.TYPE_XML:
181:                            case Field.TYPE_STRING:
182:                                node.setValue(field, stringValue);
183:                                break;
184:                            case Field.TYPE_NODE:
185:                            case Field.TYPE_INTEGER:
186:                                try {
187:                                    int i = -1;
188:                                    if (!stringValue.equals(""))
189:                                        i = Integer.parseInt(stringValue);
190:                                    node.setValue(field, i);
191:                                } catch (NumberFormatException x) {
192:                                    log.debug("Value for field " + field
193:                                            + " is not a number '"
194:                                            + stringValue + "'");
195:                                    return INVALID_VALUE;
196:                                }
197:                                break;
198:                            case Field.TYPE_BINARY:
199:                                log
200:                                        .error("We don't support casts from String to Binary");
201:                                return INVALID_VALUE; // so, a String value is invalid for binaries.
202:                            case Field.TYPE_FLOAT:
203:                                try {
204:                                    float f = -1;
205:                                    if (!stringValue.equals(""))
206:                                        f = Float.parseFloat(stringValue);
207:                                    node.setValue(field, f);
208:                                } catch (NumberFormatException x) {
209:                                    log
210:                                            .debug("Value for field " + field
211:                                                    + " is not a number "
212:                                                    + stringValue);
213:                                    return INVALID_VALUE;
214:                                }
215:                                break;
216:                            case Field.TYPE_DOUBLE:
217:                                try {
218:                                    double d = -1;
219:                                    if (!stringValue.equals(""))
220:                                        d = Double.parseDouble(stringValue);
221:                                    node.setValue(field, d);
222:                                } catch (NumberFormatException x) {
223:                                    log
224:                                            .debug("Value for field " + field
225:                                                    + " is not a number "
226:                                                    + stringValue);
227:                                    return INVALID_VALUE;
228:                                }
229:                                break;
230:                            case Field.TYPE_LONG:
231:                                try {
232:                                    long l = -1;
233:                                    if (!stringValue.equals(""))
234:                                        l = Long.parseLong(stringValue);
235:                                    node.setValue(field, l);
236:                                } catch (NumberFormatException x) {
237:                                    log
238:                                            .debug("Value for field " + field
239:                                                    + " is not a number "
240:                                                    + stringValue);
241:                                    return INVALID_VALUE;
242:                                }
243:                                break;
244:                            case Field.TYPE_DATETIME:
245:                                try {
246:                                    node.setValue(field, Casting.toDate(value));
247:                                } catch (Exception e) {
248:                                    return INVALID_VALUE;
249:                                }
250:                                break;
251:                            case Field.TYPE_BOOLEAN:
252:                                if (org.mmbase.datatypes.StringDataType.BOOLEAN_PATTERN
253:                                        .matcher(stringValue).matches()) {
254:                                    node.setValue(field, Casting
255:                                            .toBoolean(value));
256:                                } else {
257:                                    return INVALID_VALUE;
258:                                }
259:                                break;
260:                            default:
261:                                log.error("Unknown type for field " + field);
262:                                break;
263:                            }
264:                        } else {
265:                            node.setValue(field, value);
266:                        }
267:                    } else {
268:                        node.setValue(field, value);
269:                        log.warn("Invalid type for field " + field);
270:                        return UNKNOWN;
271:                    }
272:                } else {
273:                    log.error("setObjectField(): Can't find node : " + key);
274:                }
275:                return "";
276:            }
277:
278:            /**
279:             * @javadoc
280:             */
281:            public String getObjectField(String owner, String key, String field) {
282:                String rtn;
283:                MMObjectNode node = getNode(owner, key);
284:                if (node == null) {
285:                    log.error("Node " + key + " not found!");
286:                    rtn = "";
287:                } else {
288:                    rtn = node.getStringValue(field);
289:                }
290:                return rtn;
291:            }
292:
293:            /**
294:             * @javadoc
295:             */
296:            private String getTmpKey(String owner, String key) {
297:                return owner + "_" + key;
298:            }
299:        }
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