org.javers.core.metamodel.type.ClassType Maven / Gradle / Ivy

package org.javers.core.metamodel.type;

import org.javers.common.reflection.ReflectionUtil;
import org.javers.common.validation.Validate;
import java.lang.reflect.Type;
import java.util.Optional;

import static org.javers.common.validation.Validate.argumentIsNotNull;

/**
 * Class or ParametrizedType
 */
abstract class ClassType extends JaversType {

    private final Class baseJavaClass;

    ClassType(Type baseJavaType) {
        this(baseJavaType, Optional.empty());
    }

    ClassType(Type baseJavaType, Optional name) {
        this(baseJavaType, name, 0);
    }

    ClassType(Type baseJavaType, Optional name, int expectedArgs) {
        super(baseJavaType, name, expectedArgs);
        Validate.argumentIsNotNull(name);
        this.baseJavaClass = ReflectionUtil.extractClass(baseJavaType);
    }

    @Override
    public boolean canBePrototype() {
        return true;
    }

    @Override
    public boolean isInstance(Object cdo) {
        argumentIsNotNull(cdo);
        return baseJavaClass.isAssignableFrom(cdo.getClass());
    }

    /**
     * Type for JSON representation.
     *
     * For Values it's simply baseJavaType.
     *
     * For ManagedTypes (references to Entities and ValueObjects) it's GlobalId
     * because JaVers serializes references in the 'dehydrated' form.
     */
    protected Type getRawDehydratedType() {
        return baseJavaClass;
    }

    public Class getBaseJavaClass() {
        return baseJavaClass;
    }
}