-// $Id: CQLProxNode.java,v 1.6 2002-11-20 17:56:22 mike Exp $
+// $Id: CQLProxNode.java,v 1.8 2007-06-27 17:02:01 mike Exp $
package org.z3950.zing.cql;
import java.util.Vector;
* candidate records which are sufficiently close to each other, as
* specified by a set of proximity parameters.
*
- * @version $Id: CQLProxNode.java,v 1.6 2002-11-20 17:56:22 mike Exp $
+ * @version $Id: CQLProxNode.java,v 1.8 2007-06-27 17:02:01 mike Exp $
*/
public class CQLProxNode extends CQLBooleanNode {
ModifierSet ms;
* Returns an array of the modifiers associated with a proximity
* node.
* @return
- * An array of modifiers, each represented by a two-element
- * <TT>Vector</TT>, in which element 0 is the modifier type
- * (e.g. <TT>distance</TT> or <TT>ordering</TT>) and element 1 is
- * the associated value (e.g. <TT>3</TT> or <TT>unordered</TT>).
+ * An array of Modifier objects.
*/
- public Vector[] getModifiers() {
+ public Vector<Modifier> getModifiers() {
return ms.getModifiers();
}
* unit-code ::= integer.
*/
String opPQF() {
+ int relCode = getRelCode();
+ int unitCode = getProxUnitCode();
+
+ String res = "prox " +
+ "0 " +
+ ms.modifier("distance") + " " +
+ (ms.modifier("ordering").equals("ordered") ? 1 : 0) + " " +
+ relCode + " " +
+ "1 " +
+ unitCode;
+
+ return res;
+ }
+
+ private int getRelCode() {
String rel = ms.modifier("relation");
- int relCode = 0;
if (rel.equals("<")) {
- relCode = 1;
+ return 1;
} else if (rel.equals("<=")) {
- relCode = 2;
+ return 2;
} else if (rel.equals("=")) {
- relCode = 3;
+ return 3;
} else if (rel.equals(">=")) {
- relCode = 4;
+ return 4;
} else if (rel.equals(">")) {
- relCode = 5;
+ return 5;
} else if (rel.equals("<>")) {
- relCode = 6;
+ return 6;
}
+ return 0;
+ }
+ private int getProxUnitCode() {
String unit = ms.modifier("unit");
- int unitCode = 0;
if (unit.equals("word")) {
- unitCode = 2;
+ return 2;
} else if (unit.equals("sentence")) {
- unitCode = 3;
+ return 3;
} else if (unit.equals("paragraph")) {
- unitCode = 4;
+ return 4;
} else if (unit.equals("element")) {
- unitCode = 8;
+ return 8;
}
+ return 0;
+ }
- String res = "prox " +
- "0 " +
- ms.modifier("distance") + " " +
- (ms.modifier("ordering").equals("ordered") ? 1 : 0) + " " +
- relCode + " " +
- "1 " +
- unitCode;
-
- return res;
+
+ byte[] opType1() {
+ byte[] op = new byte[100];
+ int offset, value;
+ offset = putTag(CONTEXT, 46, CONSTRUCTED, op, 0); // Operator
+ op[offset++] = (byte)(0x80&0xff); // indefinite length
+
+ offset = putTag(CONTEXT, 3, CONSTRUCTED, op, offset); // prox
+ op[offset++] = (byte)(0x80&0xff); // indefinite length
+
+ offset = putTag(CONTEXT, 1, PRIMITIVE, op, offset); // exclusion
+ value = 0; // false
+ offset = putLen(numLen(value), op, offset);
+ offset = putNum(value, op, offset);
+
+ offset = putTag(CONTEXT, 2, PRIMITIVE, op, offset); // distance
+ value = Integer.parseInt(ms.modifier("distance"));
+ offset = putLen(numLen(value), op, offset);
+ offset = putNum(value, op, offset);
+
+ offset = putTag(CONTEXT, 3, PRIMITIVE, op, offset); // ordered
+ value = ms.modifier("ordering").equals("ordered") ? 1 : 0;
+ offset = putLen(numLen(value), op, offset);
+ offset = putNum(value, op, offset);
+
+ offset = putTag(CONTEXT, 4, PRIMITIVE, op, offset); // relationType
+ value = getRelCode();
+ offset = putLen(numLen(value), op, offset);
+ offset = putNum(value, op, offset);
+
+ offset = putTag(CONTEXT, 5, CONSTRUCTED, op, offset); // proximityUnitCode
+ op[offset++] = (byte)(0x80&0xff); // indefinite length
+ offset = putTag(CONTEXT, 1, PRIMITIVE, op, offset); // known
+ value = getProxUnitCode();
+ offset = putLen(numLen(value), op, offset);
+ offset = putNum(value, op, offset);
+ op[offset++] = 0x00; // end of proximityUnitCode
+ op[offset++] = 0x00;
+
+ op[offset++] = 0x00; // end of prox
+ op[offset++] = 0x00;
+ op[offset++] = 0x00; // end of Operator
+ op[offset++] = 0x00;
+
+ byte[] o = new byte[offset];
+ System.arraycopy(op, 0, o, 0, offset);
+ return o;
}
}