* Add SimpleFileRepository for adding single global JavaScript files as repositories.

src/helma/framework/repository/SingleFileRepository.java

@@ -0,0 +1,337 @@
+/*
+ * Helma License Notice
+ *
+ * The contents of this file are subject to the Helma License
+ * Version 2.0 (the "License"). You may not use this file except in
+ * compliance with the License. A copy of the License is available at
+ * http://adele.helma.org/download/helma/license.txt
+ *
+ * Copyright 1998-2006 Helma Software. All Rights Reserved.
+ *
+ * $RCSfile$
+ * $Author$
+ * $Revision$
+ * $Date$
+ */
+
+package helma.framework.repository;
+
+import java.io.IOException;
+import java.io.File;
+import java.util.List;
+import java.util.Iterator;
+import java.util.LinkedList;
+
+public class SingleFileRepository implements Repository {
+
+    final Resource res;
+    final Repository global;
+    final Repository[] repositories;
+
+    /**
+     * Constructs a SingleFileRepository using the given argument
+     * @param initArgs absolute path to the script file
+     */
+    public SingleFileRepository(String initArgs) {
+        this(new File(initArgs));
+    }
+
+    /**
+     * Constructs a SingleFileRepository using the given argument
+     * @param file the script file
+     */
+    public SingleFileRepository(File file) {
+        res = new FileResource(file, this);
+        global = new FakeGlobal();
+        repositories = new Repository[] { global };
+    }
+
+    /**
+     * Checksum of the repository and all its content. Implementations
+     * should make sure
+     *
+     * @return checksum
+     * @throws java.io.IOException
+     */
+    public long getChecksum() throws IOException {
+        return res.lastModified();
+    }
+
+    /**
+     * Returns the name of the repository.
+     *
+     * @return name of the repository
+     */
+    public String getShortName() {
+        return res.getShortName();
+    }
+
+    /**
+     * Returns the name of the repository; this is a full name including all
+     * parent repositories.
+     *
+     * @return full name of the repository
+     */
+    public String getName() {
+        return res.getName();
+    }
+
+    /**
+     * Get this repository's logical script root repository.
+     *
+     * @return top-level repository
+     * @see {isScriptRoot()}
+     */
+    public Repository getRootRepository() {
+        return this;
+    }
+
+    /**
+     * Returns this repository's parent repository.
+     * Returns null if this repository already is the top-level repository
+     *
+     * @return the parent repository
+     */
+    public Repository getParentRepository() {
+        return null;
+    }
+
+    /**
+     * Checks wether the repository is to be considered a top-level
+     * repository from a scripting point of view. For example, a zip
+     * file within a file repository is not a root repository from
+     * a physical point of view, but from the scripting point of view it is.
+     *
+     * @return true if the repository is to be considered a top-level script repository
+     */
+    public boolean isScriptRoot() {
+        return false;
+    }
+
+    /**
+     * Creates the repository if does not exist yet
+     *
+     * @throws java.io.IOException
+     */
+    public void create() throws IOException {
+        // noop
+    }
+
+    /**
+     * Checks wether the repository actually (or still) exists
+     *
+     * @return true if the repository exists
+     * @throws java.io.IOException
+     */
+    public boolean exists() throws IOException {
+        return res.exists();
+    }
+
+    /**
+     * Returns this repository's direct child repositories
+     *
+     * @return direct repositories
+     * @throws java.io.IOException
+     */
+    public Repository[] getRepositories() throws IOException {
+        return repositories;
+    }
+
+    /**
+     * Returns all direct and indirect resources
+     *
+     * @return resources recursive
+     * @throws java.io.IOException
+     */
+    public List getAllResources() throws IOException {
+        return global.getAllResources();
+    }
+
+    /**
+     * Returns all direct resources
+     *
+     * @return direct resources
+     * @throws java.io.IOException
+     */
+    public Iterator getResources() throws IOException {
+        return new Iterator() {
+            public boolean hasNext() {
+                return false;
+            }
+
+            public void remove() {}
+
+            public Object next() {
+                return null;
+            }
+        };
+    }
+
+    /**
+     * Returns a specific direct resource of the repository
+     *
+     * @param resourceName name of the child resource to return
+     * @return specified child resource
+     */
+    public Resource getResource(String resourceName) {
+        return null;
+    }
+
+    /**
+     * Returns the date the repository was last modified.
+     *
+     * @return last modified date
+     * @throws java.io.IOException
+     */
+    public long lastModified() throws IOException {
+        return res.lastModified();
+    }
+
+    class FakeGlobal implements Repository {
+
+        final List resources;
+
+        FakeGlobal() {
+            resources = new LinkedList();
+            resources.add(res);
+        }
+
+        /**
+         * Checksum of the repository and all its content. Implementations
+         * should make sure
+         *
+         * @return checksum
+         * @throws java.io.IOException
+         */
+        public long getChecksum() throws IOException {
+            return res.lastModified();
+        }
+
+        /**
+         * Returns the name of the repository.
+         *
+         * @return name of the repository
+         */
+        public String getShortName() {
+            // we need to return "Global" here in order to be recognized as
+            // global code folder - that's the whole purpose of this class
+            return "Global";
+        }
+
+        /**
+         * Returns the name of the repository; this is a full name including all
+         * parent repositories.
+         *
+         * @return full name of the repository
+         */
+        public String getName() {
+            return res.getName();
+        }
+
+        /**
+         * Get this repository's logical script root repository.
+         *
+         * @return top-level repository
+         * @see {isScriptRoot()}
+         */
+        public Repository getRootRepository() {
+            return SingleFileRepository.this;
+        }
+
+        /**
+         * Returns this repository's parent repository.
+         * Returns null if this repository already is the top-level repository
+         *
+         * @return the parent repository
+         */
+        public Repository getParentRepository() {
+            return SingleFileRepository.this;
+        }
+
+        /**
+         * Checks wether the repository is to be considered a top-level
+         * repository from a scripting point of view. For example, a zip
+         * file within a file repository is not a root repository from
+         * a physical point of view, but from the scripting point of view it is.
+         *
+         * @return true if the repository is to be considered a top-level script repository
+         */
+        public boolean isScriptRoot() {
+            return false;
+        }
+
+        /**
+         * Creates the repository if does not exist yet
+         *
+         * @throws java.io.IOException
+         */
+        public void create() throws IOException {
+        }
+
+        /**
+         * Checks wether the repository actually (or still) exists
+         *
+         * @return true if the repository exists
+         * @throws java.io.IOException
+         */
+        public boolean exists() throws IOException {
+            return res.exists();
+        }
+
+        /**
+         * Returns this repository's direct child repositories
+         *
+         * @return direct repositories
+         * @throws java.io.IOException
+         */
+        public Repository[] getRepositories() throws IOException {
+            return AbstractRepository.emptyRepositories;
+        }
+
+        /**
+         * Returns all direct and indirect resources
+         *
+         * @return resources recursive
+         * @throws java.io.IOException
+         */
+        public List getAllResources() throws IOException {
+            return resources;
+        }
+
+        /**
+         * Returns all direct resources
+         *
+         * @return direct resources
+         * @throws java.io.IOException
+         */
+        public Iterator getResources() throws IOException {
+            return resources.iterator();
+        }
+
+        /**
+         * Returns a specific direct resource of the repository
+         *
+         * @param resourceName name of the child resource to return
+         * @return specified child resource
+         */
+        public Resource getResource(String resourceName) {
+            if (res.getName().equals(resourceName)) {
+                return res;
+            }
+            return null;
+        }
+
+        /**
+         * Returns the date the repository was last modified.
+         *
+         * @return last modified date
+         * @throws java.io.IOException
+         */
+        public long lastModified() throws IOException {
+            return res.lastModified();
+        }
+    }
+
+
+}
+