X-Git-Url: http://jsfdemo.indexdata.com/?a=blobdiff_plain;f=src%2Forg%2Fz3950%2Fzing%2Fcql%2FCQLBooleanNode.java;h=794e2ace6b5ec46ddb46919be9ea5cf3c90b78d1;hb=3d47a2407f3b28ce9bb43013a6d6da0e99f336c5;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..794e2ac 100644
--- a/src/org/z3950/zing/cql/CQLBooleanNode.java
+++ b/src/org/z3950/zing/cql/CQLBooleanNode.java
@@ -1,15 +1,87 @@
-// $Id: CQLBooleanNode.java,v 1.2 2002-10-25 16:11:05 mike Exp $
+// $Id: CQLBooleanNode.java,v 1.14 2007-06-06 12:22:01 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 1.14 2007-06-06 12:22:01 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) {
+ // ### Should this use CQLNode.toXCQL(level+2, prefixes)?
+ return (indent(level) + "\n" +
+ renderPrefixes(level+1, prefixes) +
+ opXCQL(level+1) +
+ indent(level+1) + "\n" +
+ left.toXCQL(level+2) +
+ indent(level+1) + "\n" +
+ indent(level+1) + "\n" +
+ right.toXCQL(level+2) +
+ indent(level+1) + "\n" +
+ indent(level) + "\n");
+ }
+
+ // Represents the boolean operation itself: overridden for CQLProxNode
+ String opXCQL(int level) {
+ return(indent(level) + "\n" +
+ indent(level+1) + "" + op() + "\n" +
+ indent(level) + "\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[] toType1BER(Properties config) throws PQFTranslationException {
+ System.out.println("in CQLBooleanNode.toType1BER(): PQF=" +
+ toPQF(config));
+ byte[] rpn1 = left.toType1BER(config);
+ byte[] rpn2 = right.toType1BER(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();
}