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java/org/apache/catalina/webresources/EmptyResource.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.catalina.webresources;
+
+import java.io.File;
+import java.io.IOException;
+import java.io.InputStream;
+import java.net.URL;
+import java.security.cert.Certificate;
+import java.util.jar.Manifest;
+
+import org.apache.catalina.WebResource;
+import org.apache.catalina.WebResourceRoot;
+
+public class EmptyResource implements WebResource {
+
+    private final WebResourceRoot root;
+    private final String webAppPath;
+    private final File file;
+
+    public EmptyResource(WebResourceRoot root, String webAppPath) {
+        this(root, webAppPath, null);
+    }
+
+    public EmptyResource(WebResourceRoot root, String webAppPath, File file) {
+        this.root = root;
+        this.webAppPath = webAppPath;
+        this.file = file;
+    }
+
+    @Override
+    public long getLastModified() {
+        return 0;
+    }
+
+    @Override
+    public String getLastModifiedHttp() {
+        return null;
+    }
+
+    @Override
+    public boolean exists() {
+        return false;
+    }
+
+    @Override
+    public boolean isVirtual() {
+        return false;
+    }
+
+    @Override
+    public boolean isDirectory() {
+        return false;
+    }
+
+    @Override
+    public boolean isFile() {
+        return false;
+    }
+
+    @Override
+    public boolean delete() {
+        return false;
+    }
+
+    @Override
+    public String getName() {
+        int index = webAppPath.lastIndexOf('/');
+        if (index == -1) {
+            return webAppPath;
+        } else {
+            return webAppPath.substring(index + 1);
+        }
+    }
+
+    @Override
+    public long getContentLength() {
+        return -1;
+    }
+
+    @Override
+    public String getCanonicalPath() {
+        if (file == null) {
+            return null;
+        } else {
+            try {
+                return file.getCanonicalPath();
+            } catch (IOException e) {
+                return null;
+            }
+        }
+    }
+
+    @Override
+    public boolean canRead() {
+        return false;
+    }
+
+    @Override
+    public String getWebappPath() {
+        return webAppPath;
+    }
+
+    @Override
+    public String getETag() {
+        return null;
+    }
+
+    @Override
+    public void setMimeType(String mimeType) {
+        // NOOP
+    }
+
+    @Override
+    public String getMimeType() {
+        return null;
+    }
+
+    @Override
+    public InputStream getInputStream() {
+        return null;
+    }
+
+    @Override
+    public byte[] getContent() {
+        return null;
+    }
+
+    @Override
+    public long getCreation() {
+        return 0;
+    }
+
+    @Override
+    public URL getURL() {
+        return null;
+    }
+
+    @Override
+    public URL getCodeBase() {
+        return null;
+    }
+
+    @Override
+    public Certificate[] getCertificates() {
+        return null;
+    }
+
+    @Override
+    public Manifest getManifest() {
+        return null;
+    }
+
+    @Override
+    public WebResourceRoot getWebResourceRoot() {
+        return root;
+    }
+}