jodd.introspector.CachingIntrospector Maven / Gradle / Ivy
Show all versions of jodd-bean Show documentation
// Copyright (c) 2003-present, Jodd Team (http://jodd.org)
// All rights reserved.
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are met:
//
// 1. Redistributions of source code must retain the above copyright notice,
// this list of conditions and the following disclaimer.
//
// 2. Redistributions in binary form must reproduce the above copyright
// notice, this list of conditions and the following disclaimer in the
// documentation and/or other materials provided with the distribution.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
// AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
// IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
// ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
// LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
// CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
// SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
// INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
// CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
// ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
// POSSIBILITY OF SUCH DAMAGE.
package jodd.introspector;
import java.util.HashMap;
import java.util.Map;
/**
* Default {@link jodd.introspector.ClassIntrospector 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 ClassIntrospector {
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 ClassIntrospector}. It may scan
* accessible or supported fields, methods or
* constructors.
*/
public CachingIntrospector(final boolean scanAccessible, final boolean enhancedProperties, final boolean includeFieldsAsProperties, final String[] propertyFieldPrefix) {
this.cache = new HashMap<>();
this.scanAccessible = scanAccessible;
this.enhancedProperties = enhancedProperties;
this.includeFieldsAsProperties = includeFieldsAsProperties;
this.propertyFieldPrefix = propertyFieldPrefix;
}
/**
* {@inheritDoc}
*/
@Override
public ClassDescriptor lookup(final Class type) {
ClassDescriptor cd = cache.get(type);
if (cd != null) {
cd.increaseUsageCount();
return cd;
}
cd = describeClass(type);
cache.put(type, cd);
return cd;
}
/**
* {@inheritDoc}
*/
@Override
public ClassDescriptor register(final 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(final Class type) {
return new ClassDescriptor(type, scanAccessible, enhancedProperties, includeFieldsAsProperties, propertyFieldPrefix);
}
/**
* {@inheritDoc}
*/
@Override
public void reset() {
cache.clear();
}
}