X-Git-Url: http://jsfdemo.indexdata.com/?a=blobdiff_plain;f=src%2Forg%2Fz3950%2Fzing%2Fcql%2FCQLTermNode.java;h=a519215d528283ffd3cdc27e76b8aed576680f2a;hb=18405938a115378cc571d697060ac40775c62fb7;hp=5889354c478be34e3db824ebef47f32a4e9473c5;hpb=df372083094087da8590a526e0222c81c9ae7fc0;p=cql-java-moved-to-github.git

diff --git a/src/org/z3950/zing/cql/CQLTermNode.java b/src/org/z3950/zing/cql/CQLTermNode.java
index 5889354..a519215 100644
--- a/src/org/z3950/zing/cql/CQLTermNode.java
+++ b/src/org/z3950/zing/cql/CQLTermNode.java
@@ -1,4 +1,4 @@
-// $Id: CQLTermNode.java,v 1.7 2002-11-06 00:05:58 mike Exp $
+// $Id: CQLTermNode.java,v 1.22 2006-06-14 14:36:36 mike Exp $
 
 package org.z3950.zing.cql;
 import java.util.Properties;
@@ -12,7 +12,7 @@ import java.util.Vector;
  * these must be provided - you can't have a qualifier without a
  * relation or vice versa.
  *
- * @version	$Id: CQLTermNode.java,v 1.7 2002-11-06 00:05:58 mike Exp $
+ * @version	$Id: CQLTermNode.java,v 1.22 2006-06-14 14:36:36 mike Exp $
  */
 public class CQLTermNode extends CQLNode {
     private String qualifier;
@@ -34,10 +34,24 @@ public class CQLTermNode extends CQLNode {
     public CQLRelation getRelation() { return relation; }
     public String getTerm() { return term; }
 
-    public String toXCQL(int level) {
+    private static boolean isResultSetQualifier(String qual) {
+	return (qual.equals("srw.resultSet") ||
+		qual.equals("srw.resultSetId") ||
+		qual.equals("srw.resultSetName"));
+    }
+
+    public String getResultSetName() {
+	if (isResultSetQualifier(qualifier))
+	    return term;
+	else
+	    return null;
+    }
+
+    public String toXCQL(int level, Vector prefixes) {
 	return (indent(level) + "<searchClause>\n" +
+		renderPrefixes(level+1, prefixes) +
 		indent(level+1) + "<index>" + xq(qualifier) + "</index>\n" +
-		relation.toXCQL(level+1) +
+		relation.toXCQL(level+1, new Vector()) +
 		indent(level+1) + "<term>" + xq(term) + "</term>\n" +
 		indent(level) + "</searchClause>\n");
     }
@@ -47,7 +61,8 @@ public class CQLTermNode extends CQLNode {
 	String quotedTerm = maybeQuote(term);
 	String res = quotedTerm;
 
-	if (!qualifier.equalsIgnoreCase("srw.serverChoice")) {
+	if (qualifier != null &&
+	    !qualifier.equalsIgnoreCase("srw.serverChoice")) {
 	    // ### We don't always need spaces around `relation'.
 	    res = quotedQualifier + " " + relation.toCQL() + " " + quotedTerm;
 	}
@@ -55,44 +70,112 @@ public class CQLTermNode extends CQLNode {
 	return res;
     }
 
-    public String toPQF(Properties config)
-	throws UnknownQualifierException, UnknownRelationException {
+    // ### Interaction between this and its callers is not good as
+    //	regards truncation of the term and generation of truncation
+    //	attributes.  Change the interface to fix this.
+    private Vector getAttrs(Properties config) throws PQFTranslationException {
 	Vector attrs = new Vector();
 
-	if (qualifier != null) {
-	    String s = config.getProperty(qualifier);
-	    if (s == null)
-		throw new UnknownQualifierException(qualifier);
-	    attrs.add(s);
-	} else {
-	    // ### get a default access point from properties?
+	// Do this first so that if any other truncation or
+	// completeness attributes are generated, they "overwrite"
+	// those specified here.
+	//
+	//  ###	This approach relies on an unpleasant detail of Index
+	//	Data's (admittedly definitive) implementation of PQF,
+	//	and should not relied upon.
+	//
+	String attr = config.getProperty("always");
+	if (attr != null)
+	    attrs.add(attr);
+
+	attr = config.getProperty("qualifier." + qualifier);
+	if (attr == null)
+	    throw new UnknownQualifierException(qualifier);
+	attrs.add(attr);
+
+	String rel = relation.getBase();
+	if (rel.equals("=")) {
+	    rel = "eq";
+	} else if (rel.equals("<=")) {
+	    rel = "le";
+	} else if (rel.equals(">=")) {
+	    rel = "ge";
+	}
+	// ### Handling "any" and "all" properly would involve breaking
+	// the string down into a bunch of individual words and ORring
+	// or ANDing them together.  Another day.
+	attr = config.getProperty("relation." + rel);
+	if (attr == null)
+	    throw new UnknownRelationException(rel);
+	attrs.add(attr);
+
+	String[] mods = relation.getModifiers();
+	for (int i = 0; i < mods.length; i++) {
+	    attr = config.getProperty("relationModifier." + mods[i]);
+	    if (attr == null)
+		throw new UnknownRelationModifierException(mods[i]);
+	    attrs.add(attr);
 	}
 
-	if (relation != null) {
-	    String rel = relation.getBase();
-	    // ### handle "any" and "all"
-	    String s = config.getProperty("cql-java.relation." + rel);
-	    if (s == null)
-		throw new UnknownRelationException(rel);
-	    attrs.add(s);
-	} else {
-	    // ### get a default relation from properties?
+	String pos = "any";
+	String text = term;
+	if (text.length() > 0 && text.substring(0, 1).equals("^")) {
+	    text = text.substring(1); // ### change not seen by caller
+	    pos = "first";
+	}
+	int len = text.length();
+	if (len > 0 && text.substring(len-1, len).equals("^")) {
+	    text = text.substring(0, len-1); // ### change not seen by caller
+	    pos = pos.equals("first") ? "firstAndLast" : "last";
+	    // ### in the firstAndLast case, the standard
+	    //  pqf.properties file specifies that we generate a
+	    //  completeness=whole-field attributem, which means that
+	    //  we don't generate a position attribute at all.  Do we
+	    //  care?  Does it matter?
 	}
 
-	// ### handle position attributes
-	// ### handle structure attributes
-	// ### handle "always" attributes
+	attr = config.getProperty("position." + pos);
+	if (attr == null)
+	    throw new UnknownPositionException(pos);
+	attrs.add(attr);
+
+	attr = config.getProperty("structure." + rel);
+	if (attr == null)
+	    attr = config.getProperty("structure.*");
+	attrs.add(attr);
+
+	return attrs;
+    }
+
+    public String toPQF(Properties config) throws PQFTranslationException {
+	if (isResultSetQualifier(qualifier)) {
+	    // Special case: ignore relation, modifiers, wildcards, etc.
+	    // There's parallel code in toType1BER()
+	    return "@set " + maybeQuote(term);
+	}
 
-	// ### should split Vector elements on spaces
-	String s = "";
+	Vector attrs = getAttrs(config);
+
+	String attr, s = "";
 	for (int i = 0; i < attrs.size(); i++) {
-	    s += "@attr " + (String) attrs.get(i) + " ";
+	    attr = (String) attrs.get(i);
+	    s += "@attr " + Utils.replaceString(attr, " ", " @attr ") + " ";
 	}
 
-	return s + maybeQuote(term);
+	String text = term;
+	if (text.length() > 0 && text.substring(0, 1).equals("^"))
+	    text = text.substring(1);
+	int len = text.length();
+	if (len > 0 && text.substring(len-1, len).equals("^"))
+	    text = text.substring(0, len-1);
+
+	return s + maybeQuote(text);
     }
 
     static String maybeQuote(String str) {
+       if (str == null)
+          return null;
+
 	// There _must_ be a better way to make this test ...
 	if (str.length() == 0 ||
 	    str.indexOf('"') != -1 ||
@@ -109,4 +192,82 @@ public class CQLTermNode extends CQLNode {
 
 	return str;
     }
+
+    public byte[] toType1BER(Properties config) throws PQFTranslationException {
+	if (isResultSetQualifier(qualifier)) {
+	    // Special case: ignore relation, modifiers, wildcards, etc.
+	    // There's parallel code in toPQF()
+	    byte[] operand = new byte[term.length()+100];
+	    int offset;
+	    offset = putTag(CONTEXT, 0, CONSTRUCTED, operand, 0); // op
+	    operand[offset++] = (byte)(0x80&0xff); // indefinite length
+	    offset = putTag(CONTEXT, 31, PRIMITIVE, operand, offset); // ResultSetId
+	    byte[] t = term.getBytes();
+	    offset = putLen(t.length, operand, offset);
+	    System.arraycopy(t, 0, operand, offset, t.length);
+	    offset += t.length;
+	    operand[offset++] = 0x00; // end of Operand
+	    operand[offset++] = 0x00;
+	    byte[] o = new byte[offset];
+	    System.arraycopy(operand, 0, o, 0, offset);
+	    return o;
+	}
+
+	String text = term;
+	if (text.length() > 0 && text.substring(0, 1).equals("^"))
+	    text = text.substring(1);
+	int len = text.length();
+	if (len > 0 && text.substring(len-1, len).equals("^"))
+	    text = text.substring(0, len-1);
+
+	String attr, attrList, term = text;
+	byte[] operand = new byte[text.length()+100];
+	int i, j, offset, type, value;
+	offset = putTag(CONTEXT, 0, CONSTRUCTED, operand, 0); // op
+	operand[offset++]=(byte)(0x80&0xff); // indefinite length
+	offset = putTag(CONTEXT, 102, CONSTRUCTED, operand, offset); // AttributesPlusTerm
+	operand[offset++] = (byte)(0x80&0xff); // indefinite length
+	offset = putTag(CONTEXT, 44, CONSTRUCTED, operand, offset); // AttributeList
+	operand[offset++] = (byte)(0x80&0xff); // indefinite length
+
+	Vector attrs = getAttrs(config);
+	for(i = 0; i < attrs.size(); i++) {
+	    attrList = (String) attrs.get(i);
+	    java.util.StringTokenizer st =
+		new java.util.StringTokenizer(attrList);
+	    while (st.hasMoreTokens()) {
+		attr = st.nextToken();
+		j = attr.indexOf('=');
+		offset = putTag(UNIVERSAL, SEQUENCE, CONSTRUCTED, operand, offset);
+		operand[offset++] = (byte)(0x80&0xff);
+		offset = putTag(CONTEXT, 120, PRIMITIVE, operand, offset);
+		type = Integer.parseInt(attr.substring(0, j));
+		offset = putLen(numLen(type), operand, offset);
+		offset = putNum(type, operand, offset);
+
+		offset = putTag(CONTEXT, 121, PRIMITIVE, operand, offset);
+		value = Integer.parseInt(attr.substring(j+1));
+		offset = putLen(numLen(value), operand, offset);
+		offset = putNum(value, operand, offset);
+		operand[offset++] = 0x00; // end of SEQUENCE
+		operand[offset++] = 0x00;
+	    }
+	}
+	operand[offset++] = 0x00; // end of AttributeList
+	operand[offset++] = 0x00;
+
+	offset = putTag(CONTEXT, 45, PRIMITIVE, operand, offset); // general Term
+	byte[] t = term.getBytes();
+	offset = putLen(t.length, operand, offset);
+	System.arraycopy(t, 0, operand, offset, t.length);
+	offset += t.length;
+
+	operand[offset++] = 0x00; // end of AttributesPlusTerm
+	operand[offset++] = 0x00;
+	operand[offset++] = 0x00; // end of Operand
+	operand[offset++] = 0x00;
+	byte[] o = new byte[offset];
+	System.arraycopy(operand, 0, o, 0, offset);
+	return o;
+    }
 }