+/*
+ * Copyright (C) 2007-2012 Argeo GmbH
+ *
+ * Licensed 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.argeo.slc.core.execution;
+import java.io.Serializable;
+import java.util.ArrayList;
import java.util.HashMap;
+import java.util.List;
import java.util.Map;
-import java.util.UUID;
+import org.apache.commons.logging.Log;
+import org.apache.commons.logging.LogFactory;
import org.argeo.slc.execution.ExecutionSpec;
import org.argeo.slc.execution.ExecutionSpecAttribute;
import org.springframework.beans.factory.BeanNameAware;
+import org.springframework.beans.factory.InitializingBean;
+import org.springframework.beans.factory.NoSuchBeanDefinitionException;
+import org.springframework.beans.factory.config.BeanDefinition;
+import org.springframework.beans.factory.config.ConfigurableListableBeanFactory;
+import org.springframework.context.ApplicationContext;
+import org.springframework.context.ApplicationContextAware;
+import org.springframework.context.ConfigurableApplicationContext;
-public class DefaultExecutionSpec implements ExecutionSpec, BeanNameAware {
+/** Spring based implementation of execution specifications. */
+public class DefaultExecutionSpec implements ExecutionSpec, BeanNameAware,
+ ApplicationContextAware, InitializingBean, Serializable {
+ private static final long serialVersionUID = 5159882223926926539L;
+ private final static Log log = LogFactory
+ .getLog(DefaultExecutionSpec.class);
+ private transient ApplicationContext applicationContext;
+
+ private String description;
private Map<String, ExecutionSpecAttribute> attributes = new HashMap<String, ExecutionSpecAttribute>();
- private String name = getClass().getName() + "#" + UUID.randomUUID();
+ private String name = INTERNAL_NAME;
public Map<String, ExecutionSpecAttribute> getAttributes() {
return attributes;
this.name = name;
}
+ /**
+ * The Spring bean name (only relevant for specs declared has high-level
+ * beans)
+ */
public String getName() {
return name;
}
return ((ExecutionSpec) obj).getName().equals(name);
}
+ /**
+ * The Spring bean description (only relevant for specs declared has
+ * high-level beans)
+ */
+ public String getDescription() {
+ return description;
+ }
+
+ private ConfigurableListableBeanFactory getBeanFactory() {
+ return ((ConfigurableApplicationContext) applicationContext)
+ .getBeanFactory();
+ }
+
+ public void setApplicationContext(ApplicationContext applicationContext) {
+ this.applicationContext = applicationContext;
+ }
+
+ public void afterPropertiesSet() throws Exception {
+ if (description == null) {
+ try {
+ description = getBeanFactory().getBeanDefinition(name)
+ .getDescription();
+ } catch (NoSuchBeanDefinitionException e) {
+ // silent
+ }
+ }
+
+ for (String key : attributes.keySet()) {
+ ExecutionSpecAttribute attr = attributes.get(key);
+ if (attr instanceof RefSpecAttribute) {
+ RefSpecAttribute rsa = (RefSpecAttribute) attr;
+ if (rsa.getChoices() == null) {
+ List<RefValueChoice> choices = buildRefValueChoices(rsa);
+ rsa.setChoices(choices);
+ }
+ if (log.isTraceEnabled())
+ log.debug("Spec attr " + key + " has "
+ + rsa.getChoices().size() + " choices");
+ }
+ }
+ }
+
+ /**
+ * Generates a list of ref value choices based on the bean available in the
+ * application ocntext.
+ */
+ protected List<RefValueChoice> buildRefValueChoices(RefSpecAttribute rsa) {
+ List<RefValueChoice> choices = new ArrayList<RefValueChoice>();
+ if (applicationContext == null) {
+ log.warn("No application context declared,"
+ + " cannot scan ref value choices.");
+ return choices;
+ }
+
+ for (String beanName : getBeanFactory().getBeanNamesForType(
+ rsa.getTargetClass(), true, false)) {
+
+ // Since Spring 3, systemProperties is implicitly defined but has no
+ // bean definition
+ // if (beanName.equals("systemProperties"))
+ // continue beanNames;
+
+ BeanDefinition bd = getBeanFactory().getBeanDefinition(beanName);
+ RefValueChoice choice = new RefValueChoice();
+ choice.setName(beanName);
+ choice.setDescription(bd.getDescription());
+ if (log.isTraceEnabled())
+ log.debug("Found choice " + beanName + " for " + rsa);
+
+ choices.add(choice);
+
+ }
+ return choices;
+ }
+
}