Source Code Cross Referenced for MatchNSRangeQuery.java in  » Search-Engine » Jofti » com » jofti » query » namespace » Java Source Code / Java DocumentationJava Source Code and Java Documentation

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Java Source Code / Java Documentation » Search Engine » Jofti » com.jofti.query.namespace 
Source Cross Referenced  Class Diagram Java Document (Java Doc) 


001:        package com.jofti.query.namespace;
002:
003:        import com.jofti.api.IndexQuery;
004:        import com.jofti.cache.adapter.NameSpaceWrapper;
005:        import com.jofti.core.INameSpace;
006:        import com.jofti.core.INameSpaceAware;
007:        import com.jofti.core.QueryId;
008:        import com.jofti.core.QueryType;
009:        import com.jofti.util.ReflectionUtil;
010:
011:        /**
012:         * 
013:         *
014:         * A utility class to enable simple queries to be done easily. The Query matches  
015:         * ranges  for particular field. This is equivalent to (>= and <=) or (> and <).
016:         * <p>
017:         * All nameSpace queries must provide a correct namespace type for the implementation. Some nameSpaces 
018:         * are hierachical and so the search will use the nameSpace as starting point. Others are flat and so there is no 
019:         * traversal step.
020:         * <p>
021:         * This query cannot be combined with any other. iF you want to construct more complex queries use the @link com.jofti.query.Query class.
022:         *<p>
023:         * @author steve Woodcock
024:         */
025:        public class MatchNSRangeQuery implements  IndexQuery, INameSpaceAware,
026:                QueryId {
027:
028:            public final Object alias;
029:            Object nameSpace;
030:            Class className;
031:            String propertyName;
032:            Comparable startValue;
033:            Comparable endValue;
034:            NameSpaceWrapper wrapper;
035:            boolean inclusive = true;
036:
037:            static final QueryType QUERY_ID = QueryType.RANGE_NS_QUERY;
038:
039:            /**
040:             * Construct a query supplying the classname of the object type to be returned, the namespace 
041:             * under which to start the search. The field to be queried and the start and finish values to be used. 
042:             * <p>
043:             * The field type in the object and the values must be of the same type. In addition the end value must
044:             * be greater (comparaison >0 ) than the start value;
045:             * <p>
046:             * An example usage (for JBossCache) would be:
047:             * <p>
048:             * new MatchNSQuery("org.package.Myclass", "/test", "myProperty" ,new Integer(10),new Integer(20));
049:             * <p>
050:             * @param className - the class of object to be returned.
051:             * @param nameSpace - the name space to be searched.
052:             * @param propertyName - the field name to use
053:             * @param startValue - the value that is used as the start search value.
054:             * @param endValue - the value that is used as the end search value.
055:             */
056:            public MatchNSRangeQuery(Class className, Object nameSpace,
057:                    String propertyName, Comparable startValue,
058:                    Comparable endValue) {
059:                this (className, nameSpace, propertyName, startValue, endValue,
060:                        null);
061:            }
062:
063:            public MatchNSRangeQuery(Class className, Object nameSpace,
064:                    String propertyName, Comparable startValue,
065:                    Comparable endValue, Object alias) {
066:                this .className = className;
067:                this .propertyName = propertyName;
068:                this .startValue = startValue;
069:                this .endValue = endValue;
070:                this .nameSpace = nameSpace;
071:                this .alias = alias;
072:            }
073:
074:            public MatchNSRangeQuery(String className, Object nameSpace,
075:                    String propertyName, Comparable startValue,
076:                    Comparable endValue) {
077:                this (className, nameSpace, propertyName, startValue, endValue,
078:                        null);
079:            }
080:
081:            public MatchNSRangeQuery(String className, Object nameSpace,
082:                    String propertyName, Comparable startValue,
083:                    Comparable endValue, Object alias) {
084:                Class clazz = null;
085:                try {
086:                    clazz = ReflectionUtil.classForName(className);
087:                } catch (Exception e) {
088:                    throw new RuntimeException(e);
089:                }
090:                this .className = clazz;
091:                this .propertyName = propertyName;
092:                this .startValue = startValue;
093:                this .endValue = endValue;
094:                this .nameSpace = nameSpace;
095:                this .alias = alias;
096:            }
097:
098:            /**
099:             * Construct a query supplying the classname of the object type to be returned, the namespace 
100:             * under which to start the search. The field to be queried and the start and finish values to be used. 
101:             * This method also allows inclusivity to be set.
102:             * <p>
103:             * The field type in the object and the values must be of the same type. In addition the end value must
104:             * be greater (comparaison >0 ) than the start value; 
105:             * <p>
106:             * An example usage (for JBossCache) would be:
107:             * <p>
108:             * new MatchNSRangeQuery("org.package.Myclass", "/test", "myProperty" ,new Integer(10),new Integer(20), true);
109:             * <p>
110:             * @param className - the class of object to be returned.
111:             * @param nameSpace - the name space to be searched.
112:             * @param propertyName - the field name to use
113:             * @param startValue - the value that is used as the start search value.
114:             * @param endValue - the value that is used as the end search value.
115:             * @param inclusive - whether the seacrh should be inclusive of values.
116:             */
117:
118:            public MatchNSRangeQuery(Class className, Object nameSpace,
119:                    String propertyName, Comparable startValue,
120:                    Comparable endValue, boolean inclusive) {
121:                this (className, nameSpace, propertyName, startValue, endValue,
122:                        inclusive, null);
123:            }
124:
125:            public MatchNSRangeQuery(Class className, Object nameSpace,
126:                    String propertyName, Comparable startValue,
127:                    Comparable endValue, boolean inclusive, Object alias) {
128:                this .className = className;
129:                this .propertyName = propertyName;
130:                this .startValue = startValue;
131:                this .endValue = endValue;
132:                this .nameSpace = nameSpace;
133:                this .inclusive = inclusive;
134:                this .alias = alias;
135:            }
136:
137:            public MatchNSRangeQuery(String className, Object nameSpace,
138:                    String propertyName, Comparable startValue,
139:                    Comparable endValue, boolean inclusive) {
140:                this (className, nameSpace, propertyName, startValue, endValue,
141:                        inclusive, null);
142:            }
143:
144:            public MatchNSRangeQuery(String className, Object nameSpace,
145:                    String propertyName, Comparable startValue,
146:                    Comparable endValue, boolean inclusive, Object alias) {
147:                Class clazz = null;
148:                try {
149:                    clazz = ReflectionUtil.classForName(className);
150:                } catch (Exception e) {
151:                    throw new RuntimeException(e);
152:                }
153:                this .className = clazz;
154:                this .propertyName = propertyName;
155:                this .startValue = startValue;
156:                this .endValue = endValue;
157:                this .nameSpace = nameSpace;
158:                this .inclusive = inclusive;
159:                this .alias = alias;
160:            }
161:
162:            /**
163:             * Construct a query supplying the value to be searched against and the namespace 
164:             * under which to start the search. This is a convenience method for classes (such as String,Integer etc)
165:             * that have no property value as such. Instead the value is the class type.
166:             * <p>
167:             * 
168:             * An example usage (for JBossCache) would be:
169:             * <p>
170:             * new MatchNSRangeQuery("/test", "ab","zz",true);
171:             * <p>
172:             * This is so you do not have to use the methods above in the manner of
173:             * <p>
174:             * new MatchNSRangeQuery("java.lang.String", "/test", null ,"ab","zz",true); 
175:             * <p>
176:             * @param nameSpace - the name space to be searched.
177:             * @param startValue - the value that is used as the start search value.
178:             * @param endValue - the value that is used as the end search value.
179:             * @param inclusive - whether the seacrh should be inclusive of values.
180:             */
181:
182:            public MatchNSRangeQuery(Object nameSpace, Comparable startValue,
183:                    Comparable endValue, boolean inclusive) {
184:                this (nameSpace, startValue, endValue, inclusive, null);
185:            }
186:
187:            public MatchNSRangeQuery(Object nameSpace, Comparable startValue,
188:                    Comparable endValue, boolean inclusive, Object alias) {
189:                this .nameSpace = nameSpace;
190:                this .startValue = startValue;
191:                this .endValue = endValue;
192:                this .inclusive = inclusive;
193:                this .alias = alias;
194:            }
195:
196:            /**
197:             * @return Returns the className.
198:             */
199:            public Class getClassName() {
200:                return className;
201:            }
202:
203:            /**
204:             * @return Returns the propertyName.
205:             */
206:            public String getPropertyName() {
207:                return propertyName;
208:            }
209:
210:            /**
211:             * @return Returns the value.
212:             */
213:
214:            /**
215:             * @return Returns the endValue.
216:             */
217:            public Comparable getEndValue() {
218:                return endValue;
219:            }
220:
221:            /**
222:             * @return Returns the startValue.
223:             */
224:            public Comparable getStartValue() {
225:                return startValue;
226:            }
227:
228:            public synchronized INameSpace getNameSpaceWrapper() {
229:
230:                if (nameSpace instanceof  INameSpace) {
231:                    return (INameSpace) nameSpace;
232:                } else {
233:                    return new NameSpaceWrapper(nameSpace);
234:                }
235:            }
236:
237:            /**
238:             * @return Returns the nameSpace.
239:             */
240:            public synchronized Object getNameSpace() {
241:                return nameSpace;
242:            }
243:
244:            /**
245:             * @param nameSpace The nameSpace to set.
246:             */
247:            public synchronized void setNameSpace(Object nameSpace) {
248:                this .nameSpace = nameSpace;
249:            }
250:
251:            public boolean isInclusive() {
252:                return inclusive;
253:            }
254:
255:            public void setInclusive(boolean inclusive) {
256:                this .inclusive = inclusive;
257:            }
258:
259:            public Object getAlias() {
260:                return alias;
261:            }
262:
263:            public QueryType getQueryType() {
264:
265:                return QUERY_ID;
266:            }
267:
268:            public IndexQuery setParameter(String name, Object value) {
269:                throw new UnsupportedOperationException(
270:                        "Parameters are not supported for convenience classes");
271:            }
272:
273:            /* (non-Javadoc)
274:             * @see com.jofti.api.IndexQuery#setParameter(int, java.lang.Object)
275:             */
276:            public IndexQuery setParameter(int position, Object value) {
277:                throw new UnsupportedOperationException(
278:                        "Parameters are not supported for convenience classes");
279:
280:            }
281:
282:            public IndexQuery setFirstResult(int firstResult) {
283:                throw new UnsupportedOperationException(
284:                        "Result limitation is not supported for convenience classes");
285:            }
286:
287:            public IndexQuery setMaxResults(int maxResults) {
288:                throw new UnsupportedOperationException(
289:                        "Result limitation is not supported for convenience classes");
290:            }
291:        }
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