1 files changed, 27 insertions, 0 deletions
diff --git a/eaaf_core/src/main/java/at/gv/egiz/eaaf/core/api/idp/process/ExpressionEvaluator.java b/eaaf_core/src/main/java/at/gv/egiz/eaaf/core/api/idp/process/ExpressionEvaluator.java
new file mode 100644
index 00000000..eda6b3cb
--- /dev/null
+++ b/eaaf_core/src/main/java/at/gv/egiz/eaaf/core/api/idp/process/ExpressionEvaluator.java
@@ -0,0 +1,27 @@
+/*******************************************************************************
+ *******************************************************************************/
+package at.gv.egiz.eaaf.core.api.idp.process;
+
+/**
+ * Evaluates a given {@code expression} returning a boolean value.
+ * 
+ * @author tknall
+ */
+public interface ExpressionEvaluator {
+
+	/**
+	 * Evaluates a given {@code expression} returning a boolean value.
+	 * 
+	 * @param expressionContext
+	 *            The context which can be used for evaluation of the expression.
+	 * @param expression
+	 *            The expression resulting in a boolean (must not be {@code null}).
+	 * @return A boolean value.
+	 * @throws IllegalArgumentException
+	 *             In case of an invalid {@code expression}.
+	 * @throws NullPointerException
+	 *             In case of a {@code null} expression.
+	 */
+	boolean evaluate(ExpressionEvaluationContext expressionContext, String expression);
+
+}