AbstractModuleLoaderStrategy.java
/*
* Portions of this software was developed by employees of the National Institute
* of Standards and Technology (NIST), an agency of the Federal Government and is
* being made available as a public service. Pursuant to title 17 United States
* Code Section 105, works of NIST employees are not subject to copyright
* protection in the United States. This software may be subject to foreign
* copyright. Permission in the United States and in foreign countries, to the
* extent that NIST may hold copyright, to use, copy, modify, create derivative
* works, and distribute this software and its documentation without fee is hereby
* granted on a non-exclusive basis, provided that this notice and disclaimer
* of warranty appears in all copies.
*
* THE SOFTWARE IS PROVIDED 'AS IS' WITHOUT ANY WARRANTY OF ANY KIND, EITHER
* EXPRESSED, IMPLIED, OR STATUTORY, INCLUDING, BUT NOT LIMITED TO, ANY WARRANTY
* THAT THE SOFTWARE WILL CONFORM TO SPECIFICATIONS, ANY IMPLIED WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, AND FREEDOM FROM
* INFRINGEMENT, AND ANY WARRANTY THAT THE DOCUMENTATION WILL CONFORM TO THE
* SOFTWARE, OR ANY WARRANTY THAT THE SOFTWARE WILL BE ERROR FREE. IN NO EVENT
* SHALL NIST BE LIABLE FOR ANY DAMAGES, INCLUDING, BUT NOT LIMITED TO, DIRECT,
* INDIRECT, SPECIAL OR CONSEQUENTIAL DAMAGES, ARISING OUT OF, RESULTING FROM,
* OR IN ANY WAY CONNECTED WITH THIS SOFTWARE, WHETHER OR NOT BASED UPON WARRANTY,
* CONTRACT, TORT, OR OTHERWISE, WHETHER OR NOT INJURY WAS SUSTAINED BY PERSONS OR
* PROPERTY OR OTHERWISE, AND WHETHER OR NOT LOSS WAS SUSTAINED FROM, OR AROSE OUT
* OF THE RESULTS OF, OR USE OF, THE SOFTWARE OR SERVICES PROVIDED HEREUNDER.
*/
package gov.nist.secauto.metaschema.databind;
import gov.nist.secauto.metaschema.core.model.IModule;
import gov.nist.secauto.metaschema.core.util.CollectionUtil;
import gov.nist.secauto.metaschema.core.util.ObjectUtils;
import gov.nist.secauto.metaschema.databind.model.AbstractBoundModule;
import gov.nist.secauto.metaschema.databind.model.DefaultAssemblyClassBinding;
import gov.nist.secauto.metaschema.databind.model.DefaultFieldClassBinding;
import gov.nist.secauto.metaschema.databind.model.IClassBinding;
import gov.nist.secauto.metaschema.databind.model.annotations.MetaschemaAssembly;
import gov.nist.secauto.metaschema.databind.model.annotations.MetaschemaField;
import java.util.HashMap;
import java.util.Map;
import edu.umd.cs.findbugs.annotations.NonNull;
import edu.umd.cs.findbugs.annotations.Nullable;
class AbstractModuleLoaderStrategy implements IModuleLoaderStrategy {
@NonNull
private final IBindingContext bindingContext;
@NonNull
private final Map<Class<?>, IModule> modulesByClass = new HashMap<>(); // NOPMD - intentional
@NonNull
private final Map<Class<?>, IClassBinding> classBindingsByClass = new HashMap<>(); // NOPMD - intentional
protected AbstractModuleLoaderStrategy(@NonNull IBindingContext bindingContext) {
this.bindingContext = bindingContext;
}
@NonNull
public IBindingContext getBindingContext() {
return bindingContext;
}
@Override
public IModule getModuleByClass(@NonNull Class<? extends IModule> clazz) {
IModule retval;
synchronized (this) {
retval = modulesByClass.get(clazz);
if (retval == null) {
retval = AbstractBoundModule.createInstance(clazz, getBindingContext());
modulesByClass.put(clazz, retval);
}
}
return ObjectUtils.notNull(retval);
}
@Override
public IClassBinding getClassBinding(@NonNull Class<?> clazz) {
IClassBinding retval;
synchronized (this) {
retval = classBindingsByClass.get(clazz);
if (retval == null) {
retval = newClassBinding(clazz);
if (retval != null) {
classBindingsByClass.put(clazz, retval);
}
}
}
return retval;
}
@Nullable
protected IClassBinding newClassBinding(@NonNull Class<?> clazz) {
IClassBinding retval = null;
if (clazz.isAnnotationPresent(MetaschemaAssembly.class)) {
retval = DefaultAssemblyClassBinding.createInstance(clazz, getBindingContext());
} else if (clazz.isAnnotationPresent(MetaschemaField.class)) {
retval = DefaultFieldClassBinding.createInstance(clazz, getBindingContext());
}
return retval;
}
@Override
public Map<Class<?>, IClassBinding> getClassBindingsByClass() {
synchronized (this) {
return CollectionUtil.unmodifiableMap(classBindingsByClass);
}
}
}