TestScopeModelFactory.java

/*
 * Copyright 2016 Red Hat, Inc. and/or its affiliates.
 *
 * 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.kie.workbench.common.stunner.backend.definition.factory;

import java.util.Set;

import org.kie.workbench.common.stunner.core.backend.util.BackendBindableDefinitionUtils;
import org.kie.workbench.common.stunner.core.definition.annotation.Definition;
import org.kie.workbench.common.stunner.core.definition.builder.Builder;
import org.kie.workbench.common.stunner.core.factory.definition.AbstractTypeDefinitionFactory;

/**
 * Model factory for annotated modelsfor using  on test scope.
 */
public class TestScopeModelFactory extends AbstractTypeDefinitionFactory<Object> {

    private final Object definitionSet;

    public TestScopeModelFactory(Object definitionSet) {
        this.definitionSet = definitionSet;
    }

    private static Set<Class<? extends Object>> getDefinitions(Object defSet) {
        return BackendBindableDefinitionUtils.getDefinitions(defSet);
    }

    @Override
    public Set<Class<? extends Object>> getAcceptedClasses() {
        return getDefinitions(this.definitionSet);
    }

    @Override
    public Object build(Class<? extends Object> clazz) {
        Builder<?> builder = newDefinitionBuilder(clazz);
        return builder.build();
    }

    private Builder<?> newDefinitionBuilder(Class<? extends Object> definitionClass) {
        Class<? extends Builder<?>> builderClass = getDefinitionBuilderClass(definitionClass);
        if (null != builderClass) {
            try {
                return builderClass.newInstance();
            } catch (InstantiationException e) {
                e.printStackTrace();
            } catch (IllegalAccessException e) {
                e.printStackTrace();
            }
        }
        throw new RuntimeException("No annotated builder found for Definition [" + definitionClass.getName() + "]");
    }

    private Class<? extends Builder<?>> getDefinitionBuilderClass(Class<? extends Object> definitionClass) {
        if (null != definitionClass) {
            Definition annotation = definitionClass.getAnnotation(Definition.class);
            if (null != annotation) {
                return annotation.builder();
            }
        }
        return null;
    }
}