X-Git-Url: http://sru.miketaylor.org.uk/?a=blobdiff_plain;ds=sidebyside;f=src%2Forg%2Fz3950%2Fzing%2Fcql%2FCQLTermNode.java;h=9e7a7b91691fcbbd9359969023b3ea025885be1a;hb=77e96a476683020357b2c6e6fa661024698a20d8;hp=b12883e5acd39fcbb2d67fff7d02d3d0dd6d8b97;hpb=e52d49ef72a0d4531500e3e790fbe2e47fda8cba;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 b12883e..9e7a7b9 100644
--- a/src/org/z3950/zing/cql/CQLTermNode.java
+++ b/src/org/z3950/zing/cql/CQLTermNode.java
@@ -1,54 +1,137 @@
-// $Id: CQLTermNode.java,v 1.1 2002-10-25 07:38:17 mike Exp $
+// $Id: CQLTermNode.java,v 1.8 2002-11-06 20:13:45 mike Exp $
package org.z3950.zing.cql;
+import java.util.Properties;
+import java.util.Vector;
/**
- * Represents a terminal node in a CQL parse-tree ...
- * ###
+ * Represents a terminal node in a CQL parse-tree.
+ * A term node consists of the term String itself, together with,
+ * optionally, a qualifier string and a relation. Neither or both of
+ * these must be provided - you can't have a qualifier without a
+ * relation or vice versa.
*
- * @version $Id: CQLTermNode.java,v 1.1 2002-10-25 07:38:17 mike Exp $
+ * @version $Id: CQLTermNode.java,v 1.8 2002-11-06 20:13:45 mike Exp $
*/
-class CQLTermNode extends CQLNode {
+public class CQLTermNode extends CQLNode {
private String qualifier;
- private String relation;
- private String value;
+ private CQLRelation relation;
+ private String term;
- public CQLTermNode(String qualifier, String relation, String value) {
+ /**
+ * Creates a new term node with the specified qualifier,
+ * relation and term. The first two may be
+ * null, but the term may not.
+ */
+ public CQLTermNode(String qualifier, CQLRelation relation, String term) {
this.qualifier = qualifier;
this.relation = relation;
- this.value = value;
+ this.term = term;
}
- String toXCQL(int level) {
+ public String getQualifier() { return qualifier; }
+ public CQLRelation getRelation() { return relation; }
+ public String getTerm() { return term; }
+
+ public String toXCQL(int level) {
return (indent(level) + "\n" +
- indent(level+1) + "" + qualifier + "\n" +
- indent(level+1) + "" + relation + "\n" +
- indent(level+1) + "" + value + "\n" +
+ indent(level+1) + "" + xq(qualifier) + "\n" +
+ relation.toXCQL(level+1) +
+ indent(level+1) + "" + xq(term) + "\n" +
indent(level) + "\n");
}
- String toCQL() {
- String res = value;
+ public String toCQL() {
+ String quotedQualifier = maybeQuote(qualifier);
+ String quotedTerm = maybeQuote(term);
+ String res = quotedTerm;
+
+ if (!qualifier.equalsIgnoreCase("srw.serverChoice")) {
+ // ### We don't always need spaces around `relation'.
+ res = quotedQualifier + " " + relation.toCQL() + " " + quotedTerm;
+ }
+
+ return res;
+ }
+
+ public String toPQF(Properties config) throws PQFTranslationException {
+ Vector attrs = new Vector();
+
+ String 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);
- if (res.indexOf('"') != -1) {
- // ### precede each '"' with a '/'
+ 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 (res.indexOf('"') != -1 ||
- res.indexOf(' ') != -1 ||
- res.indexOf('\t') != -1 ||
- res.indexOf('=') != -1 ||
- res.indexOf('<') != -1 ||
- res.indexOf('>') != -1 ||
- res.indexOf('/') != -1 ||
- res.indexOf('(') != -1 ||
- res.indexOf(')') != -1) {
- res = '"' + res + '"';
+ String pos = "unanchored";
+ String text = term;
+ if (text.length() > 0 && text.substring(0, 1).equals("^")) {
+ text = text.substring(1);
+ pos = "anchored";
+ }
+ 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);
+
+ attr = config.getProperty("always");
+ if (attr != null)
+ attrs.add(attr);
+
+ String s = "";
+ for (int i = 0; i < attrs.size(); i++) {
+ attr = (String) attrs.get(i);
+ s += "@attr " + Utils.replaceString(attr, " ", " @attr ") + " ";
+ }
+
+ return s + maybeQuote(text);
+ }
+
+ static String maybeQuote(String str) {
+ // There _must_ be a better way to make this test ...
+ if (str.length() == 0 ||
+ str.indexOf('"') != -1 ||
+ str.indexOf(' ') != -1 ||
+ str.indexOf('\t') != -1 ||
+ str.indexOf('=') != -1 ||
+ str.indexOf('<') != -1 ||
+ str.indexOf('>') != -1 ||
+ str.indexOf('/') != -1 ||
+ str.indexOf('(') != -1 ||
+ str.indexOf(')') != -1) {
+ str = '"' + Utils.replaceString(str, "\"", "\\\"") + '"';
}
- // ### The qualifier may need quoting.
- // ### We don't always need spaces around `relation'.
- return qualifier + " " + relation + " " + value;
+ return str;
}
}