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java/org/apache/jasper/el/ELContextWrapper.java

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+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.apache.jasper.el;
+
+import java.util.Locale;
+
+import javax.el.ELContext;
+import javax.el.ELResolver;
+import javax.el.FunctionMapper;
+import javax.el.VariableMapper;
+
+/**
+ * Simple ELContextWrapper for runtime evaluation of EL w/ dynamic FunctionMappers
+ *
+ * @author jhook
+ */
+public final class ELContextWrapper extends ELContext {
+
+    private final ELContext target;
+    private final FunctionMapper fnMapper;
+
+    public ELContextWrapper(ELContext target, FunctionMapper fnMapper) {
+        this.target = target;
+        this.fnMapper = fnMapper;
+    }
+
+    @Override
+    public ELResolver getELResolver() {
+        return this.target.getELResolver();
+    }
+
+    @Override
+    public FunctionMapper getFunctionMapper() {
+        if (this.fnMapper != null) return this.fnMapper;
+        return this.target.getFunctionMapper();
+    }
+
+    @Override
+    public VariableMapper getVariableMapper() {
+        return this.target.getVariableMapper();
+    }
+
+    @Override
+    public Object getContext(@SuppressWarnings("rawtypes") Class key) {
+        return this.target.getContext(key);
+    }
+
+    @Override
+    public Locale getLocale() {
+        return this.target.getLocale();
+    }
+
+    @Override
+    public boolean isPropertyResolved() {
+        return this.target.isPropertyResolved();
+    }
+
+    @Override
+    public void putContext(@SuppressWarnings("rawtypes") Class key,
+            Object contextObject) throws NullPointerException {
+        this.target.putContext(key, contextObject);
+    }
+
+    @Override
+    public void setLocale(Locale locale) {
+        this.target.setLocale(locale);
+    }
+
+    @Override
+    public void setPropertyResolved(boolean resolved) {
+        this.target.setPropertyResolved(resolved);
+    }
+
+}