Author: jdillon
Date: Sat Feb  3 22:54:22 2007
New Revision: 503366

URL: http://svn.apache.org/viewvc?view=rev&rev=503366
Log:
Helpers to render templates w/Velocity

Added:
    geronimo/sandbox/build-support/libraries/system/1/groovy/gbuild/system/util/Template.groovy   (with props)
    geronimo/sandbox/build-support/libraries/system/1/groovy/gbuild/system/util/TemplateEngine.groovy   (with props)

Added: geronimo/sandbox/build-support/libraries/system/1/groovy/gbuild/system/util/Template.groovy
URL: http://svn.apache.org/viewvc/geronimo/sandbox/build-support/libraries/system/1/groovy/gbuild/system/util/Template.groovy?view=auto&rev=503366
==============================================================================
--- geronimo/sandbox/build-support/libraries/system/1/groovy/gbuild/system/util/Template.groovy (added)
+++ geronimo/sandbox/build-support/libraries/system/1/groovy/gbuild/system/util/Template.groovy Sat Feb  3 22:54:22 2007
@@ -0,0 +1,72 @@
+/*
+ * 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.
+ */
+
+//
+// $Id$
+//
+
+package gbuild.system.util
+
+import gbuild.system.LogSupport
+
+import org.apache.commons.logging.Log
+import org.apache.commons.logging.LogFactory
+
+import org.apache.commons.lang.time.StopWatch
+
+import org.apache.velocity.VelocityContext
+
+/**
+ * Wrapper around a Velocity template.
+ */
+class Template extends LogSupport
+{
+    String name
+    
+    Map params = [:]
+    
+    private org.apache.velocity.Template template
+    
+    def Template(String name, org.apache.velocity.Template template) {
+        assert name
+        assert template
+        
+        this.name = name
+        this.template = template
+    }
+    
+    void render(writer) {
+        assert writer
+        
+        log.info "Rendering template: $name"
+        
+        def context = new VelocityContext()
+        
+        params.each {
+            context.put(it.key, it.value)
+        }
+        
+        def watch = new StopWatch()
+        watch.start()
+        
+        template.merge(context, writer)
+        
+        log.info "Rendered template in $watch"
+    }
+}

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Added: geronimo/sandbox/build-support/libraries/system/1/groovy/gbuild/system/util/TemplateEngine.groovy
URL: http://svn.apache.org/viewvc/geronimo/sandbox/build-support/libraries/system/1/groovy/gbuild/system/util/TemplateEngine.groovy?view=auto&rev=503366
==============================================================================
--- geronimo/sandbox/build-support/libraries/system/1/groovy/gbuild/system/util/TemplateEngine.groovy (added)
+++ geronimo/sandbox/build-support/libraries/system/1/groovy/gbuild/system/util/TemplateEngine.groovy Sat Feb  3 22:54:22 2007
@@ -0,0 +1,75 @@
+/*
+ * 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.
+ */
+
+//
+// $Id$
+//
+
+package gbuild.system.util
+
+import gbuild.system.LogSupport
+
+import org.apache.commons.lang.time.StopWatch
+
+import org.apache.velocity.app.VelocityEngine
+
+/**
+ * Helper to render templates with Velocity.
+ */
+class TemplateEngine extends LogSupport
+{
+    private VelocityEngine velocity = new VelocityEngine()
+    
+    // Lazy initialized to allow nicer API to installing libraries
+    private boolean initialized = false
+    
+    def TemplateEngine(basepath) {
+        def url = getClass().classLoader.getResource(basepath)
+        assert url
+        assert url.protocol == 'file'
+        
+        def basedir = url.path
+        log.info "Base dir: $basedir"
+        
+        velocity.setProperty('resource.loader', 'file')
+        velocity.setProperty('file.resource.loader.description', 'Velocity File Resource Loader')
+        velocity.setProperty('file.resource.loader.class', 'org.apache.velocity.runtime.resource.loader.FileResourceLoader')
+        velocity.setProperty('file.resource.loader.path', basedir)
+        velocity.setProperty('file.resource.loader.cache', 'false')
+        velocity.setProperty('file.resource.loader.modificationCheckInterval', '2')
+        
+        velocity.setProperty('runtime.log.logsystem.class', 'org.apache.velocity.runtime.log.NullLogSystem')
+    }
+    
+    def setLibraries(List libs) {
+        assert libs
+        assert !initialized
+        
+        velocity.setProperty('velocimacro.library', libs.join(','))
+    }
+    
+    Template getTemplate(name) {
+        if (!initialized) {
+            velocity.init()
+            initialized = true
+        }
+        
+        return new Template(name, velocity.getTemplate(name))
+    }
+}

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