From 5b9190e42d439d7b1cf07d0ad09a30e1e4d3d143 Mon Sep 17 00:00:00 2001
From: mike <mike>
Date: Wed, 27 Jun 2007 17:01:23 +0000
Subject: [PATCH] New

---
 src/org/z3950/zing/cql/Modifier.java |   86 ++++++++++++++++++++++++++++++++++
 1 file changed, 86 insertions(+)
 create mode 100644 src/org/z3950/zing/cql/Modifier.java

diff --git a/src/org/z3950/zing/cql/Modifier.java b/src/org/z3950/zing/cql/Modifier.java
new file mode 100644
index 0000000..00c1a89
--- /dev/null
+++ b/src/org/z3950/zing/cql/Modifier.java
@@ -0,0 +1,86 @@
+// $Id: Modifier.java,v 1.1 2007-06-27 17:01:23 mike Exp $
+
+package org.z3950.zing.cql;
+import java.util.Vector;
+import java.lang.StringBuffer;
+
+/**
+ * Represents a single modifier, consisting of three elements: a type,
+ * a comparision and a value.  For example, "distance", "<", "3".  The
+ * type is mandatory; either the comparison and value must both occur,
+ * or neither must.
+ * <P>
+ * This class is used only by ModifierSet.
+ *
+ * @version $Id: Modifier.java,v 1.1 2007-06-27 17:01:23 mike Exp $
+ */
+public class Modifier {
+    String type;
+    String comparison;
+    String value;
+
+    /**
+     * Creates a new Modifier with the specified type, comparison
+     * and value.
+     */
+    public Modifier(String type, String comparison, String value) {
+	this.type = type;
+	this.comparison = comparison;
+	this.value = value;
+    }
+
+    /**
+     * Creates a new Modifier with the specified value but no
+     * comparison or value.
+     */
+    public Modifier(String value) {
+	this.value = value;
+    }
+
+    /**
+     * Returns the type with which the Modifier was created.
+     */
+    public String getType() {
+	return type;
+    }
+
+    /**
+     * Returns the comparison with which the Modifier was created.
+     */
+    public String getComparison() {
+	return comparison;
+    }
+
+    /**
+     * Returns the value with which the Modifier was created.
+     */
+    public String getValue() {
+	return value;
+    }
+
+    public String toXCQL(int level, String relationElement) {
+	StringBuffer buf = new StringBuffer();
+
+	buf.append(Utils.indent(level) + "<modifier>\n");
+	buf.append(Utils.indent(level+1) +
+		   "<type>" + Utils.xq(type) + "</type>\n");
+	if (value != null) {
+	    buf.append(Utils.indent(level+1) + "<" + relationElement + ">" +
+		       Utils.xq(comparison) + "</" + relationElement + ">\n");
+	    buf.append(Utils.indent(level+1) +
+		       "<value>" + Utils.xq(value) + "</value>\n");
+	}
+	
+	buf.append(Utils.indent(level) + "</modifier>\n");
+	return buf.toString();
+    }
+
+    public String toCQL() {
+	StringBuffer buf = new StringBuffer(type);
+
+	if (value != null)
+	    buf.append(" " + comparison + " " + value);
+
+	return buf.toString();
+    }
+}
-- 
1.7.10.4