X-Git-Url: http://git.indexdata.com/?a=blobdiff_plain;f=src%2Forg%2Fz3950%2Fzing%2Fcql%2FCQLTermNode.java;h=f9b17acac99dbb24d42db16caad98fbd94003f75;hb=af9fc1ccd0a8d9048d0b469a72b11bead020b719;hp=5c149a92e45f54e93bf3b622899c3fe480ceada8;hpb=70be8275aabe87c909bf11148bb279c3e1380bb2;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 5c149a9..f9b17ac 100644
--- a/src/org/z3950/zing/cql/CQLTermNode.java
+++ b/src/org/z3950/zing/cql/CQLTermNode.java
@@ -1,42 +1,188 @@
-// $Id: CQLTermNode.java,v 1.5 2002-10-30 09:19:26 mike Exp $
+// $Id: CQLTermNode.java,v 1.28 2007-07-03 13:41:24 mike Exp $
 
 package org.z3950.zing.cql;
+import java.util.Properties;
+import java.util.Vector;
 
 
 /**
  * Represents a terminal node in a CQL parse-tree.
- * ###
+ * A term node consists of the term String itself, together with,
+ * optionally, an index string and a relation.  Neither or both of
+ * these must be provided - you can't have an index without a
+ * relation or vice versa.
  *
- * @version	$Id: CQLTermNode.java,v 1.5 2002-10-30 09:19:26 mike Exp $
+ * @version	$Id: CQLTermNode.java,v 1.28 2007-07-03 13:41:24 mike Exp $
  */
 public class CQLTermNode extends CQLNode {
-    private String qualifier;
+    private String index;
     private CQLRelation relation;
     private String term;
 
-    public CQLTermNode(String qualifier, CQLRelation relation, String term) {
-	this.qualifier = qualifier;
+    /**
+     * Creates a new term node with the specified <TT>index</TT>,
+     * <TT>relation</TT> and <TT>term</TT>.  The first two may be
+     * <TT>null</TT>, but the <TT>term</TT> may not.
+     */
+    public CQLTermNode(String index, CQLRelation relation, String term) {
+	this.index = index;
 	this.relation = relation;
 	this.term = term;
     }
 
-    String toXCQL(int level) {
+    public String getIndex() { return index; }
+    public CQLRelation getRelation() { return relation; }
+    public String getTerm() { return term; }
+
+    private static boolean isResultSetIndex(String qual) {
+	return (qual.equals("srw.resultSet") ||
+		qual.equals("srw.resultSetId") ||
+		qual.equals("srw.resultSetName") ||
+		qual.equals("cql.resultSet") ||
+		qual.equals("cql.resultSetId") ||
+		qual.equals("cql.resultSetName"));
+    }
+
+    public String getResultSetName() {
+	if (isResultSetIndex(index))
+	    return term;
+	else
+	    return null;
+    }
+
+    public String toXCQL(int level, Vector<CQLPrefix> prefixes,
+			 Vector<ModifierSet> sortkeys) {
 	return (indent(level) + "<searchClause>\n" +
-		indent(level+1) + "<index>" + xq(qualifier) + "</index>\n" +
+		renderPrefixes(level+1, prefixes) +
+		indent(level+1) + "<index>" + xq(index) + "</index>\n" +
 		relation.toXCQL(level+1) +
 		indent(level+1) + "<term>" + xq(term) + "</term>\n" +
+		renderSortKeys(level+1, sortkeys) +
 		indent(level) + "</searchClause>\n");
     }
 
-    String toCQL() {
-	String quotedQualifier = maybeQuote(qualifier);
+    public String toCQL() {
+	String quotedIndex = maybeQuote(index);
 	String quotedTerm = maybeQuote(term);
+	String res = quotedTerm;
+
+	if (index != null &&
+	    !index.equalsIgnoreCase("srw.serverChoice") &&
+	    !index.equalsIgnoreCase("cql.serverChoice")) {
+	    // ### We don't always need spaces around `relation'.
+	    res = quotedIndex + " " + relation.toCQL() + " " + quotedTerm;
+	}
+
+	return res;
+    }
+
+    // ### 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<String> attrs = new Vector<String>();
+
+	// 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("index." + index);
+	if (attr == null)
+	    throw new UnknownIndexException(index);
+	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);
+
+	Vector<Modifier> mods = relation.getModifiers();
+	for (int i = 0; i < mods.size(); i++) {
+	    String type = mods.get(i).type;
+	    attr = config.getProperty("relationModifier." + type);
+	    if (attr == null)
+		throw new UnknownRelationModifierException(type);
+	    attrs.add(attr);
+	}
+
+	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?
+	}
+
+	attr = config.getProperty("position." + pos);
+	if (attr == null)
+	    throw new UnknownPositionException(pos);
+	attrs.add(attr);
 
-	// ### We don't always need spaces around `relation'.
-	return quotedQualifier + " " + relation.toCQL() + " " + quotedTerm;
+	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 (isResultSetIndex(index)) {
+	    // Special case: ignore relation, modifiers, wildcards, etc.
+	    // There's parallel code in toType1BER()
+	    return "@set " + maybeQuote(term);
+	}
+
+	Vector attrs = getAttrs(config);
+
+	String attr, s = "";
+	for (int i = 0; i < attrs.size(); i++) {
+	    attr = (String) attrs.get(i);
+	    s += "@attr " + Utils.replaceString(attr, " ", " @attr ") + " ";
+	}
+
+	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 ||
@@ -48,9 +194,87 @@ public class CQLTermNode extends CQLNode {
 	    str.indexOf('/') != -1 ||
 	    str.indexOf('(') != -1 ||
 	    str.indexOf(')') != -1) {
-	    str = '"' + replace(str, "\"", "\\\"") + '"';
+	    str = '"' + Utils.replaceString(str, "\"", "\\\"") + '"';
 	}
 
 	return str;
     }
+
+    public byte[] toType1BER(Properties config) throws PQFTranslationException {
+	if (isResultSetIndex(index)) {
+	    // 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;
+    }
 }