1 files changed, 56 insertions, 0 deletions
diff --git a/jpa/plugins/org.eclipse.jpt.core/src/org/eclipse/jpt/core/internal/jdtutility/CharacterStringExpressionConverter.java b/jpa/plugins/org.eclipse.jpt.core/src/org/eclipse/jpt/core/internal/jdtutility/CharacterStringExpressionConverter.java
new file mode 100644
index 0000000000..cb3a57e172
--- /dev/null
+++ b/jpa/plugins/org.eclipse.jpt.core/src/org/eclipse/jpt/core/internal/jdtutility/CharacterStringExpressionConverter.java
@@ -0,0 +1,56 @@
+/*******************************************************************************
+ * Copyright (c) 2006 Oracle. All rights reserved.
+ * This program and the accompanying materials are made available under the
+ * terms of the Eclipse Public License v1.0, which accompanies this distribution
+ * and is available at http://www.eclipse.org/legal/epl-v10.html.
+ * 
+ * Contributors:
+ *     Oracle - initial API and implementation
+ ******************************************************************************/
+package org.eclipse.jpt.core.internal.jdtutility;
+
+import org.eclipse.jdt.core.dom.AST;
+import org.eclipse.jdt.core.dom.ASTNode;
+import org.eclipse.jdt.core.dom.CharacterLiteral;
+import org.eclipse.jdt.core.dom.Expression;
+
+/**
+ * Convert an expression to/from a string representation of a character
+ * (e.g. "A").
+ */
+public final class CharacterStringExpressionConverter extends AbstractExpressionConverter {
+	private static ExpressionConverter INSTANCE;
+
+	/**
+	 * Return the singleton.
+	 */
+	public static ExpressionConverter instance() {
+		if (INSTANCE == null) {
+			INSTANCE = new CharacterStringExpressionConverter();
+		}
+		return INSTANCE;
+	}
+
+	/**
+	 * Ensure non-instantiability.
+	 */
+	private CharacterStringExpressionConverter() {
+		super();
+	}
+	
+	@Override
+	protected Expression convert_(Object o, AST ast) {
+		CharacterLiteral characterLiteral = ast.newCharacterLiteral();
+		characterLiteral.setCharValue(((String) o).charAt(0));
+		return characterLiteral;
+	}
+
+	@Override
+	protected Object convert_(Expression expression) {
+		return (expression.getNodeType() == ASTNode.CHARACTER_LITERAL) ?
+			Character.toString(((CharacterLiteral) expression).charValue())
+		:
+			null;
+	}
+
+}