X-Git-Url: http://jsfdemo.indexdata.com/?a=blobdiff_plain;f=src%2Forg%2Fz3950%2Fzing%2Fcql%2FCQLProxNode.java;h=9c7dff9ba9b7d953bfcdb50064fc5315dfd87c99;hb=f3c88fe15ee06a671407a0368e449db991526802;hp=8c69ecc11815321c5b6dbf1bf78b8c5c5fc1551d;hpb=df372083094087da8590a526e0222c81c9ae7fc0;p=cql-java-moved-to-github.git

diff --git a/src/org/z3950/zing/cql/CQLProxNode.java b/src/org/z3950/zing/cql/CQLProxNode.java
index 8c69ecc..9c7dff9 100644
--- a/src/org/z3950/zing/cql/CQLProxNode.java
+++ b/src/org/z3950/zing/cql/CQLProxNode.java
@@ -1,6 +1,7 @@
-// $Id: CQLProxNode.java,v 1.2 2002-11-06 00:05:58 mike Exp $
+// $Id: CQLProxNode.java,v 1.7 2002-12-05 17:14:52 mike Exp $
 
 package org.z3950.zing.cql;
+import java.util.Vector;
 
 
 /**
@@ -9,7 +10,7 @@ package org.z3950.zing.cql;
  * candidate records which are sufficiently close to each other, as
  * specified by a set of proximity parameters.
  *
- * @version	$Id: CQLProxNode.java,v 1.2 2002-11-06 00:05:58 mike Exp $
+ * @version	$Id: CQLProxNode.java,v 1.7 2002-12-05 17:14:52 mike Exp $
  */
 public class CQLProxNode extends CQLBooleanNode {
     ModifierSet ms;
@@ -38,10 +39,6 @@ public class CQLProxNode extends CQLBooleanNode {
 	this.right = right;
     }
 
-    String op() {
-	return ms.toCQL();
-    }
-
     /**
      * Adds a modifier of the specified <TT>type</TT> and
      * <TT>value</TT> to a proximity node.  Valid types are
@@ -57,9 +54,129 @@ public class CQLProxNode extends CQLBooleanNode {
 	ms.addModifier(type, value);
     }
 
-    // ### should have a public method to retrieve all modifiers
+    /**
+     * 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>).
+     */
+    public Vector[] getModifiers() {
+	return ms.getModifiers();
+    }
+
+    String op() {
+	return ms.toCQL();
+    }
 
-    String booleanXQL(int level) {
+    String opXCQL(int level) {
 	return ms.toXCQL(level, "boolean");
     }
+
+    /*
+     * proximity ::= exclusion distance ordered relation which-code unit-code.
+     * exclusion ::= '1' | '0' | 'void'.
+     * distance ::= integer.
+     * ordered ::= '1' | '0'.
+     * relation ::= integer.
+     * which-code ::= 'known' | 'private' | integer.
+     * 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");
+	if (rel.equals("<")) {
+	    return 1;
+	} else if (rel.equals("<=")) {
+	    return 2;
+	} else if (rel.equals("=")) {
+	    return 3;
+	} else if (rel.equals(">=")) {
+	    return 4;
+	} else if (rel.equals(">")) {
+	    return 5;
+	} else if (rel.equals("<>")) {
+	    return 6;
+	}
+	return 0;
+    }
+
+    private int getProxUnitCode() {
+	String unit = ms.modifier("unit");
+	if (unit.equals("word")) {
+	    return 2;
+	} else if (unit.equals("sentence")) {
+	    return 3;
+	} else if (unit.equals("paragraph")) {
+	    return 4;
+	} else if (unit.equals("element")) {
+	    return 8;
+	}
+	return 0;
+    }
+
+
+    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;
+    }
 }