import java.util.List;\r
import java.util.Vector;\r
\r
+import org.apache.commons.logging.Log;\r
+import org.apache.commons.logging.LogFactory;\r
import org.apache.tools.ant.types.DataType;\r
-import org.argeo.slc.ant.SlcAntException;\r
-import org.argeo.slc.ant.SlcProjectHelper;\r
+import org.argeo.slc.ant.AntConstants;\r
import org.argeo.slc.core.SlcException;\r
import org.springframework.beans.BeanWrapper;\r
import org.springframework.beans.BeanWrapperImpl;\r
\r
/** Abstract Ant type wrapping a Spring bean. */\r
public class SpringArg<T> extends DataType {\r
+ private final static Log log = LogFactory.getLog(SpringArg.class);\r
+\r
private List<OverrideArg> overrides = new Vector<OverrideArg>();\r
\r
private String bean;\r
+ private String antref;\r
+ /**\r
+ * Reference to the original object, used to merge overrides. <b>this object\r
+ * will be modified</b>.\r
+ */\r
+ private T original;\r
\r
// cache bean instance to avoid reading it twice if it is a prototype\r
- private T beanInstance = null;\r
+ private T instance = null;\r
\r
/** The <u>name</u> of the underlying bean, as set through the attribute. */\r
public String getBean() {\r
\r
/** Setter for the bean name. */\r
public void setBean(String bean) {\r
+ checkValueAlreadySet();\r
this.bean = bean;\r
}\r
\r
+ public String getAntref() {\r
+ return antref;\r
+ }\r
+\r
+ /** Sets a reference to an ant data type. */\r
+ public void setAntref(String antref) {\r
+ checkValueAlreadySet();\r
+ this.antref = antref;\r
+ }\r
+\r
/**\r
- * Retrieve the instance of the bean, and sets the overriden properties.\r
+ * Retrieve the instance of the bean, and sets the overridden properties.\r
* <b>The value is cached.</b>\r
*/\r
- public T getBeanInstance() {\r
- if (beanInstance == null) {\r
- beanInstance = (T)getContext().getBean(bean);\r
- \r
- setOverridenProperties(beanInstance);\r
+ public T getInstance() {\r
+ if (instance == null) {\r
+ if (log.isTraceEnabled())\r
+ log.trace(this + "\t: Creates instance");\r
+\r
+ if (bean != null) {\r
+ instance = (T) getContext().getBean(bean);\r
+ if (instance == null)\r
+ throw new SlcException("No object found for Spring bean "\r
+ + bean);\r
+ } else if (antref != null) {\r
+ instance = (T) getProject().getReference(antref);\r
+ if (instance == null)\r
+ throw new SlcException("No object found for Ant reference "\r
+ + antref);\r
+ } else if (original != null) {\r
+ instance = original;\r
+ } else {\r
+ throw new SlcException(\r
+ "Don't know how to retrieve bean instance");\r
+ }\r
+\r
+ setOverridenProperties(instance);\r
\r
// FIXME: why are we doing this? Could not find any object using it\r
- if (beanInstance instanceof InitializingBean) {\r
+ if (instance instanceof InitializingBean) {\r
try {\r
- ((InitializingBean) beanInstance).afterPropertiesSet();\r
+ ((InitializingBean) instance).afterPropertiesSet();\r
} catch (Exception e) {\r
throw new SlcException("Could not initialize bean", e);\r
}\r
}\r
+ } else {\r
+ if (log.isTraceEnabled())\r
+ log.trace(this + "\t: Returns cached instance");\r
}\r
- return beanInstance;\r
+ return instance;\r
}\r
- \r
- protected void setOverridenProperties(Object obj){\r
+\r
+ protected void setOverridenProperties(Object obj) {\r
BeanWrapper wrapper = new BeanWrapperImpl(obj);\r
for (OverrideArg override : overrides) {\r
if (override.getName() == null) {\r
- throw new SlcAntException(\r
+ throw new SlcException(\r
"The name of the property to override has to be set.");\r
}\r
\r
-// LogFactory.getLog(getClass()).debug(\r
-// "Prop " + override.getName());\r
- wrapper.setPropertyValue(override.getName(), override\r
- .getObject());\r
+ if (log.isTraceEnabled())\r
+ log.trace(this + "\t: Overrides property " + override.getName()\r
+ + " with " + override);\r
+\r
+ if (override.getMerge() == true) {\r
+ // if override is marked as merged retrieve the value and set is\r
+ // as original\r
+ override.setOriginal(wrapper.getPropertyValue(override\r
+ .getName()));\r
+ }\r
+ wrapper.setPropertyValue(override.getName(), override.getObject());\r
}\r
- \r
+\r
}\r
\r
/** Creates an override subtag. */\r
/** The related Spring application context. */\r
protected ApplicationContext getContext() {\r
return (ApplicationContext) getProject().getReference(\r
- SlcProjectHelper.REF_ROOT_CONTEXT);\r
+ AntConstants.REF_ROOT_CONTEXT);\r
+ }\r
+\r
+ protected void checkValueAlreadySet() {\r
+ if (antref != null || bean != null || original != null) {\r
+ throw new SlcException("Instance value already defined.");\r
+ }\r
}\r
\r
+ public void setOriginal(T original) {\r
+ checkValueAlreadySet();\r
+ this.original = original;\r
+ }\r
+\r
+ public T getOriginal() {\r
+ return original;\r
+ }\r
+\r
+ @Override\r
+ public String toString() {\r
+ StringBuffer buf = new StringBuffer(getClass().getSimpleName());\r
+ if (bean != null) {\r
+ buf.append("#bean=").append(bean);\r
+ } else if (antref != null) {\r
+ buf.append("#antref=").append(antref);\r
+ } else if (original != null) {\r
+ buf.append("#orig=").append(original.hashCode());\r
+ } else {\r
+ buf.append("#noid");\r
+ }\r
+ buf.append("#").append(hashCode());\r
+ return buf.toString();\r
+ }\r
}\r
projects / gpl / argeo-slc.git / blobdiff