TypeSourceResolver.java

/*
 * Copyright 2015 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.services.backend.builder.core;

import java.util.Set;

import org.drools.workbench.models.datamodel.oracle.TypeSource;
import org.kie.scanner.KieModuleMetaData;

public class TypeSourceResolver {

    private final Set<String> javaResources;
    private final KieModuleMetaData kieModuleMetaData;

    public TypeSourceResolver( final KieModuleMetaData kieModuleMetaData,
                               final Set<String> javaResources ) {
        this.kieModuleMetaData = kieModuleMetaData;
        this.javaResources = javaResources;
    }

    public TypeSource getTypeSource( final Class<?> clazz ) {
        if ( isDeclaredInDRL( clazz ) ) {
            return TypeSource.DECLARED;
        } else if ( isDefinedInProjectOrWithinDependency( clazz ) ) {
            return TypeSource.JAVA_PROJECT;
        } else {
            return TypeSource.JAVA_DEPENDENCY;
        }
    }

    private boolean isDefinedInProjectOrWithinDependency( final Class<?> clazz ) {
        return javaResources.contains( toFQCN( clazz ) );
    }

    private boolean isDeclaredInDRL( final Class<?> clazz ) {
        return kieModuleMetaData.getTypeMetaInfo( clazz ).isDeclaredType();
    }

    private String toFQCN( final Class<?> clazz ) {
        String fullyQualifiedClassName = clazz.getName();
        int innerClassIdentifierIndex = fullyQualifiedClassName.indexOf( "$" );
        if ( innerClassIdentifierIndex > 0 ) {
            return fullyQualifiedClassName.substring( 0,
                                                      innerClassIdentifierIndex );
        } else {
            return fullyQualifiedClassName;
        }
    }

}