-// $Id: CQLBooleanNode.java,v 1.6 2002-10-31 22:22:01 mike Exp $
+// $Id: CQLBooleanNode.java,v 1.15 2007-06-29 10:21:30 mike Exp $
package org.z3950.zing.cql;
+import java.util.Properties;
+import java.util.Vector;
/**
* Represents a boolean node in a CQL parse-tree.
- * ##
*
- * @version $Id: CQLBooleanNode.java,v 1.6 2002-10-31 22:22:01 mike Exp $
+ * @version $Id: CQLBooleanNode.java,v 1.15 2007-06-29 10:21:30 mike Exp $
*/
public abstract class CQLBooleanNode extends CQLNode {
- protected CQLNode left;
- protected CQLNode right;
+ /**
+ * The root of a parse-tree representing the left-hand side.
+ */
+ public CQLNode left;
- abstract String op();
+ /**
+ * The root of a parse-tree representing the right-hand side.
+ */
+ public CQLNode right;
- String toXCQL(int level) {
- return (indent(level) + "<triple>\n" +
- booleanXQL(level+1) +
- left.toXCQL(level+1) +
- right.toXCQL(level+1) +
- indent(level) + "</triple>\n");
+ /**
+ * The set of modifiers that are applied to this boolean.
+ */
+ public ModifierSet ms;
+
+ protected CQLBooleanNode(CQLNode left, CQLNode right, ModifierSet ms) {
+ this.left = left;
+ this.right = right;
+ this.ms = ms;
}
- String booleanXQL(int level) {
- return(indent(level) + "<boolean>\n" +
- indent(level+1) + "<value>" + op() + "</value>\n" +
- indent(level) + "</boolean>\n");
+ public String toXCQL(int level, Vector prefixes) {
+ // ### Should this use CQLNode.toXCQL(level+2, prefixes)?
+ return (indent(level) + "<triple>\n" +
+ renderPrefixes(level+1, prefixes) +
+ ms.toXCQL(level+1, "boolean") +
+ indent(level+1) + "<leftOperand>\n" +
+ left.toXCQL(level+2) +
+ indent(level+1) + "</leftOperand>\n" +
+ indent(level+1) + "<rightOperand>\n" +
+ right.toXCQL(level+2) +
+ indent(level+1) + "</rightOperand>\n" +
+ indent(level) + "</triple>\n");
}
- String toCQL() {
+ 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();
}