jodd.introspector.CachingIntrospector Maven / Gradle / Ivy
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// Copyright (c) 2003-2014, Jodd Team (jodd.org). All Rights Reserved.
package jodd.introspector;
import java.util.HashMap;
import java.util.Map;
/**
* Default {@link jodd.introspector.Introspector introspector} that caches all class descriptors.
* It can examine either accessible or supported fields/methods/constructors.
*
* It simply caches all class descriptors.
*/
public class CachingIntrospector implements Introspector {
protected final Map cache;
protected final boolean scanAccessible;
protected final boolean enhancedProperties;
protected final boolean includeFieldsAsProperties;
protected final String[] propertyFieldPrefix;
/**
* Default constructor.
*/
public CachingIntrospector() {
this(true, true, true, null);
}
/**
* Creates new caching {@link Introspector}. It may scan
* accessible or supported fields, methods or
* constructors.
*/
public CachingIntrospector(boolean scanAccessible, boolean enhancedProperties, boolean includeFieldsAsProperties, String[] propertyFieldPrefix) {
this.cache = new HashMap();
this.scanAccessible = scanAccessible;
this.enhancedProperties = enhancedProperties;
this.includeFieldsAsProperties = includeFieldsAsProperties;
this.propertyFieldPrefix = propertyFieldPrefix;
}
/**
* {@inheritDoc}
*/
public ClassDescriptor lookup(Class type) {
ClassDescriptor cd = cache.get(type);
if (cd != null) {
cd.increaseUsageCount();
return cd;
}
cd = describeClass(type);
cache.put(type, cd);
return cd;
}
/**
* {@inheritDoc}
*/
public ClassDescriptor register(Class type) {
ClassDescriptor cd = describeClass(type);
cache.put(type, cd);
return cd;
}
/**
* Describes a class by creating a new instance of {@link ClassDescriptor}
* that examines all accessible methods and fields.
*/
protected ClassDescriptor describeClass(Class type) {
return new ClassDescriptor(type, scanAccessible, enhancedProperties, includeFieldsAsProperties, propertyFieldPrefix);
}
/**
* {@inheritDoc}
*/
public void reset() {
cache.clear();
}
}