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java/org/apache/jasper/compiler/BeanRepository.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.compiler;
+
+
+import java.util.HashMap;
+
+import org.apache.jasper.JasperException;
+
+/**
+ * Repository of {page, request, session, application}-scoped beans
+ *
+ * @author Mandar Raje
+ * @author Remy Maucherat
+ */
+public class BeanRepository {
+
+    private final HashMap<String, String> beanTypes;
+    private final ClassLoader loader;
+    private final ErrorDispatcher errDispatcher;
+
+    /**
+     * Constructor.
+     * @param loader The class loader
+     * @param err The error dispatcher that will be used to report errors
+     */
+    public BeanRepository(ClassLoader loader, ErrorDispatcher err) {
+        this.loader = loader;
+        this.errDispatcher = err;
+        beanTypes = new HashMap<>();
+    }
+
+    public void addBean(Node.UseBean n, String s, String type, String scope)
+        throws JasperException {
+
+        if (!(scope == null || scope.equals("page") || scope.equals("request")
+                || scope.equals("session") || scope.equals("application"))) {
+            errDispatcher.jspError(n, "jsp.error.usebean.badScope");
+        }
+
+        beanTypes.put(s, type);
+    }
+
+    public Class<?> getBeanType(String bean)
+        throws JasperException {
+        Class<?> clazz = null;
+        try {
+            clazz = loader.loadClass(beanTypes.get(bean));
+        } catch (ClassNotFoundException ex) {
+            throw new JasperException (ex);
+        }
+        return clazz;
+    }
+
+    public boolean checkVariable(String bean) {
+        return beanTypes.containsKey(bean);
+    }
+
+}
+
+