org.hibernate.validator.internal.cfg.context.ConstraintMappingContextImplBase Maven / Gradle / Ivy

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 * Licensed under the Apache License, Version 2.0 (the "License");
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package org.hibernate.validator.internal.cfg.context;

import java.lang.annotation.ElementType;
import java.lang.reflect.Member;
import java.lang.reflect.Method;

import org.hibernate.validator.cfg.context.MethodConstraintMappingContext;
import org.hibernate.validator.cfg.context.PropertyConstraintMappingContext;
import org.hibernate.validator.cfg.context.TypeConstraintMappingContext;
import org.hibernate.validator.internal.util.Contracts;
import org.hibernate.validator.internal.util.ReflectionHelper;
import org.hibernate.validator.internal.util.logging.Log;
import org.hibernate.validator.internal.util.logging.LoggerFactory;

import static org.hibernate.validator.internal.util.logging.Messages.MESSAGES;

/**
 * Base class for implementations of constraint mapping creational context types.
 *
 * @author Gunnar Morling
 */
public abstract class ConstraintMappingContextImplBase {

	private static final Log log = LoggerFactory.make();

	protected final Class beanClass;
	protected final ConstraintMappingContext mapping;

	public ConstraintMappingContextImplBase(Class beanClass, ConstraintMappingContext mapping) {
		this.beanClass = beanClass;
		this.mapping = mapping;
	}

	public  TypeConstraintMappingContext type(Class type) {
		Contracts.assertNotNull( beanClass, MESSAGES.beanTypeMustNotBeNull() );

		return new TypeConstraintMappingContextImpl( type, mapping );
	}

	public PropertyConstraintMappingContext property(String property, ElementType elementType) {
		Contracts.assertNotNull( property, "The property name must not be null." );
		Contracts.assertNotNull( elementType, "The element type must not be null." );
		Contracts.assertNotEmpty( property, MESSAGES.propertyNameMustNotBeEmpty() );

		Member member = ReflectionHelper.getMember(
				beanClass, property, elementType
		);

		if ( member == null ) {
			throw log.getUnableToFindPropertyWithAccessException( beanClass, property, elementType );
		}

		return new PropertyConstraintMappingContextImpl( beanClass, member, mapping );
	}

	public MethodConstraintMappingContext method(String name, Class... parameterTypes) {
		Contracts.assertNotNull( name, MESSAGES.methodNameMustNotBeNull() );

		Method method = ReflectionHelper.getDeclaredMethod( beanClass, name, parameterTypes );

		if ( method == null ) {
			StringBuilder sb = new StringBuilder();
			for ( Class oneParameterType : parameterTypes ) {
				sb.append( oneParameterType.getName() ).append( ", " );
			}

			String parameterTypesAsString = sb.length() > 2 ? sb.substring( 0, sb.length() - 2 ) : sb.toString();

			throw log.getUnableToFindMethodException( beanClass, name, parameterTypesAsString );
		}

		return new MethodConstraintMappingContextImpl( beanClass, method, mapping );
	}
}