Use StringBuilder instead of StringBuffer, optimize

[cql-java-moved-to-github.git] / src / main / java / org / z3950 / zing / cql / ModifierSet.java

diff --git a/src/main/java/org/z3950/zing/cql/ModifierSet.java b/src/main/java/org/z3950/zing/cql/ModifierSet.java
index 31fdad1..ce5915c 100644 (file)
--- a/src/main/java/org/z3950/zing/cql/ModifierSet.java
+++ b/src/main/java/org/z3950/zing/cql/ModifierSet.java
@@ -1,7 +1,6 @@
 // $Id: ModifierSet.java,v 1.13 2007-07-03 13:30:18 mike Exp $
 
 package org.z3950.zing.cql;
-import java.lang.StringBuffer;
 import java.util.ArrayList;
 import java.util.List;
 
@@ -88,26 +87,27 @@ public class ModifierSet {
 
     private String underlyingToXCQL(int level, String topLevelElement,
                                    String valueElement) {
-       StringBuffer buf = new StringBuffer();
-       buf.append(Utils.indent(level) + "<" + topLevelElement + ">\n");
-       buf.append(Utils.indent(level+1) +
-                  "<" + valueElement + ">" + Utils.xq(base) +
-                  "</" + valueElement + ">\n");
+       StringBuilder buf = new StringBuilder();
+       buf.append(Utils.indent(level)).append("<").append(topLevelElement).
+            append(">\n").append(Utils.indent(level + 1)).append("<").
+            append(valueElement).append(">").append(Utils.xq(base)).append("</").
+            append(valueElement).append(">\n");
        if (modifiers.size() > 0) {
-           buf.append(Utils.indent(level+1) + "<modifiers>\n");
+           buf.append(Utils.indent(level + 1)).append("<modifiers>\n");
            for (int i = 0; i < modifiers.size(); i++) {
                buf.append(modifiers.get(i).toXCQL(level+2, "comparison"));
            }
-           buf.append(Utils.indent(level+1) + "</modifiers>\n");
+           buf.append(Utils.indent(level + 1)).append("</modifiers>\n");
        }
-       buf.append(Utils.indent(level) + "</" + topLevelElement + ">\n");
+       buf.append(Utils.indent(level)).append("</").append(topLevelElement).
+            append(">\n");
        return buf.toString();
     }
 
     public String toCQL() {
-       StringBuffer buf = new StringBuffer(base);
+       StringBuilder buf = new StringBuilder(base);
        for (int i = 0; i < modifiers.size(); i++) {
-           buf.append("/" + modifiers.get(i).toCQL());
+           buf.append("/").append(modifiers.get(i).toCQL());
        }
 
        return buf.toString();