init

java/org/apache/jasper/el/JspValueExpression.java

@@ -0,0 +1,159 @@
+/*
+ * 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.io.Externalizable;
+import java.io.IOException;
+import java.io.ObjectInput;
+import java.io.ObjectOutput;
+
+import javax.el.ELContext;
+import javax.el.ELException;
+import javax.el.PropertyNotFoundException;
+import javax.el.PropertyNotWritableException;
+import javax.el.ValueExpression;
+
+/**
+ * Wrapper for providing context to ValueExpressions
+ *
+ * @author Jacob Hookom
+ */
+public final class JspValueExpression extends ValueExpression implements
+        Externalizable {
+
+    private ValueExpression target;
+
+    private String mark;
+
+    public JspValueExpression() {
+        super();
+    }
+
+    public JspValueExpression(String mark, ValueExpression target) {
+        this.target = target;
+        this.mark = mark;
+    }
+
+    @Override
+    public Class<?> getExpectedType() {
+        return this.target.getExpectedType();
+    }
+
+    @Override
+    public Class<?> getType(ELContext context) throws NullPointerException,
+            PropertyNotFoundException, ELException {
+        context.notifyBeforeEvaluation(getExpressionString());
+        try {
+            Class<?> result = this.target.getType(context);
+            context.notifyAfterEvaluation(getExpressionString());
+            return result;
+        } catch (PropertyNotFoundException e) {
+            if (e instanceof JspPropertyNotFoundException) throw e;
+            throw new JspPropertyNotFoundException(this.mark, e);
+        } catch (ELException e) {
+            if (e instanceof JspELException) throw e;
+            throw new JspELException(this.mark, e);
+        }
+    }
+
+    @Override
+    public boolean isReadOnly(ELContext context) throws NullPointerException,
+            PropertyNotFoundException, ELException {
+        context.notifyBeforeEvaluation(getExpressionString());
+        try {
+            boolean result = this.target.isReadOnly(context);
+            context.notifyAfterEvaluation(getExpressionString());
+            return result;
+        } catch (PropertyNotFoundException e) {
+            if (e instanceof JspPropertyNotFoundException) throw e;
+            throw new JspPropertyNotFoundException(this.mark, e);
+        } catch (ELException e) {
+            if (e instanceof JspELException) throw e;
+            throw new JspELException(this.mark, e);
+        }
+    }
+
+    @Override
+    public void setValue(ELContext context, Object value)
+            throws NullPointerException, PropertyNotFoundException,
+            PropertyNotWritableException, ELException {
+        context.notifyBeforeEvaluation(getExpressionString());
+        try {
+            this.target.setValue(context, value);
+            context.notifyAfterEvaluation(getExpressionString());
+        } catch (PropertyNotWritableException e) {
+            if (e instanceof JspPropertyNotWritableException) throw e;
+            throw new JspPropertyNotWritableException(this.mark, e);
+        } catch (PropertyNotFoundException e) {
+            if (e instanceof JspPropertyNotFoundException) throw e;
+            throw new JspPropertyNotFoundException(this.mark, e);
+        } catch (ELException e) {
+            if (e instanceof JspELException) throw e;
+            throw new JspELException(this.mark, e);
+        }
+    }
+
+    @Override
+    public Object getValue(ELContext context) throws NullPointerException,
+            PropertyNotFoundException, ELException {
+        context.notifyBeforeEvaluation(getExpressionString());
+        try {
+            Object result = this.target.getValue(context);
+            context.notifyAfterEvaluation(getExpressionString());
+            return result;
+        } catch (PropertyNotFoundException e) {
+            if (e instanceof JspPropertyNotFoundException) throw e;
+            throw new JspPropertyNotFoundException(this.mark, e);
+        } catch (ELException e) {
+            if (e instanceof JspELException) throw e;
+            throw new JspELException(this.mark, e);
+        }
+    }
+
+    @Override
+    public boolean equals(Object obj) {
+        return this.target.equals(obj);
+    }
+
+    @Override
+    public int hashCode() {
+        return this.target.hashCode();
+    }
+
+    @Override
+    public String getExpressionString() {
+        return this.target.getExpressionString();
+    }
+
+    @Override
+    public boolean isLiteralText() {
+        return this.target.isLiteralText();
+    }
+
+    @Override
+    public void writeExternal(ObjectOutput out) throws IOException {
+        out.writeUTF(this.mark);
+        out.writeObject(this.target);
+    }
+
+    @Override
+    public void readExternal(ObjectInput in) throws IOException,
+            ClassNotFoundException {
+        this.mark = in.readUTF();
+        this.target = (ValueExpression) in.readObject();
+    }
+}