-// $Id: CQLTermNode.java,v 1.8 2002-11-06 20:13:45 mike Exp $
+// $Id: CQLTermNode.java,v 1.17 2002-12-11 17:14:20 mike Exp $
package org.z3950.zing.cql;
import java.util.Properties;
* these must be provided - you can't have a qualifier without a
* relation or vice versa.
*
- * @version $Id: CQLTermNode.java,v 1.8 2002-11-06 20:13:45 mike Exp $
+ * @version $Id: CQLTermNode.java,v 1.17 2002-12-11 17:14:20 mike Exp $
*/
public class CQLTermNode extends CQLNode {
private String qualifier;
public CQLRelation getRelation() { return relation; }
public String getTerm() { return term; }
- public String toXCQL(int level) {
+ 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");
}
return res;
}
- public String toPQF(Properties config) throws PQFTranslationException {
+ // ### 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();
- String attr;
+ // 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 pos = "unanchored";
+ String pos = "any";
String text = term;
if (text.length() > 0 && text.substring(0, 1).equals("^")) {
- text = text.substring(1);
- pos = "anchored";
+ 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);
attr = config.getProperty("structure.*");
attrs.add(attr);
- attr = config.getProperty("always");
- if (attr != null)
- attrs.add(attr);
+ return attrs;
+ }
- String s = "";
+ public String toPQF(Properties config) throws PQFTranslationException {
+ if (qualifier.equals("srw.resultSet")) {
+ // 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);
}
return str;
}
+
+ public byte[] toType1BER(Properties config) throws PQFTranslationException {
+ if (qualifier.equals("srw.resultSet")) {
+ // 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 = maybeQuote(text);
+ System.out.println("in CQLTermNode.toType1BER(): PQF=" + toPQF(config));
+ 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
+ offset = putTag(UNIVERSAL, SEQUENCE, CONSTRUCTED, operand, offset);
+ operand[offset++] = (byte)(0x80&0xff);
+
+ 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(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;
+ }
}
projects / cql-java-moved-to-github.git / blobdiff