X-Git-Url: http://jsfdemo.indexdata.com/?a=blobdiff_plain;f=src%2Forg%2Fz3950%2Fzing%2Fcql%2FCQLBooleanNode.java;h=6e772eb812ddb3cb84ca733323c804cec065750d;hb=57b8aeb26a6aacaa478e6886ade3e40ca6eae2bb;hp=c56aac40cb31f5f6ad71a58c32c6176d32cad051;hpb=069f263b3422968c95d2b2a74291f04dfcdb15ac;p=cql-java-moved-to-github.git

diff --git a/src/org/z3950/zing/cql/CQLBooleanNode.java b/src/org/z3950/zing/cql/CQLBooleanNode.java
index c56aac4..6e772eb 100644
--- a/src/org/z3950/zing/cql/CQLBooleanNode.java
+++ b/src/org/z3950/zing/cql/CQLBooleanNode.java
@@ -1,15 +1,86 @@
-// $Id: CQLBooleanNode.java,v 1.2 2002-10-25 16:11:05 mike Exp $
+// $Id: CQLBooleanNode.java,v 1.12 2002-12-05 17:14:52 mike Exp $
 
 package org.z3950.zing.cql;
+import java.util.Properties;
+import java.util.Vector;
 
 
 /**
- * Represents a boolean node in a CQL parse-tree ...
- * ###
+ * Represents a boolean node in a CQL parse-tree.
  *
- * @version	$Id: CQLBooleanNode.java,v 1.2 2002-10-25 16:11:05 mike Exp $
+ * @version	$Id: CQLBooleanNode.java,v 1.12 2002-12-05 17:14:52 mike Exp $
  */
 public abstract class CQLBooleanNode extends CQLNode {
-    protected CQLNode left;
-    protected CQLNode right;
+    CQLBooleanNode() {}		// prevent javadoc from documenting this
+
+    /**
+     * The root of a parse-tree representing the left-hand side.
+     */ 
+    public CQLNode left;
+
+    /**
+     * The root of a parse-tree representing the right-hand side.
+     */ 
+    public CQLNode right;
+
+    public String toXCQL(int level, Vector prefixes) {
+	return (indent(level) + "<triple>\n" +
+		renderPrefixes(level+1, prefixes) +
+		opXCQL(level+1) +
+		indent(level+1) + "<leftOperand>\n" +
+		left.toXCQL(level+2, new Vector()) +
+		indent(level+1) + "</leftOperand>\n" +
+		indent(level+1) + "<rightOperand>\n" +
+		right.toXCQL(level+2, new Vector()) +
+		indent(level+1) + "</rightOperand>\n" +
+		indent(level) + "</triple>\n");
+    }
+
+    // Represents the boolean operation itself: overridden for CQLProxNode
+    String opXCQL(int level) {
+	return(indent(level) + "<boolean>\n" +
+	       indent(level+1) + "<value>" + op() + "</value>\n" +
+	       indent(level) + "</boolean>\n");
+    }
+
+    public String toCQL() {
+	// ### We don't always need parens around the operands
+	return "(" + left.toCQL() + ") " + op() + " (" + right.toCQL() + ")";
+    }
+
+    public String toPQF(Properties config) throws PQFTranslationException {
+	return ("@" + opPQF() +
+		" " + left.toPQF(config) +
+		" " + right.toPQF(config));
+    }
+
+    // represents the operation for PQF: overridden for CQLProxNode
+    String opPQF() { return op(); }
+
+    abstract String op();
+
+    public byte[] toType1(Properties config) throws PQFTranslationException {
+        System.out.println("in CQLBooleanNode.toType101(): PQF=" +
+			   toPQF(config));
+        byte[] rpn1 = left.toType1(config);
+        byte[] rpn2 = right.toType1(config);
+        byte[] op = opType1();
+        byte[] rpnStructure = new byte[rpn1.length+rpn2.length+op.length+4];
+        
+	// rpnRpnOp
+        int offset = putTag(CONTEXT, 1, CONSTRUCTED, rpnStructure, 0);
+
+        rpnStructure[offset++] = (byte)(0x80&0xff); // indefinite length
+        System.arraycopy(rpn1, 0, rpnStructure, offset, rpn1.length);
+        offset += rpn1.length;
+        System.arraycopy(rpn2, 0, rpnStructure, offset, rpn2.length);
+        offset += rpn2.length;
+        System.arraycopy(op, 0, rpnStructure, offset, op.length);
+        offset += op.length;
+        rpnStructure[offset++] = 0x00; // end rpnRpnOp
+        rpnStructure[offset++] = 0x00;
+        return rpnStructure;
+    }
+
+    abstract byte[] opType1();
 }