com.google.gwt.validation.client.impl.GwtBeanDescriptorImpl Maven / Gradle / Ivy

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/*
 * Copyright 2010 Google Inc.
 *
 * 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 com.google.gwt.validation.client.impl;

import java.lang.annotation.Annotation;
import java.util.HashMap;
import java.util.HashSet;
import java.util.Map;
import java.util.Set;

import javax.validation.metadata.ConstraintDescriptor;
import javax.validation.metadata.PropertyDescriptor;

/**
 * EXPERIMENTAL and subject to change. Do not use this in
 * production code.
 * 
 * Abstract BeanDescriptor for use by generated {@link GwtBeanDescriptor}.
 * 
 * Subclasses are expected to call setDescriptorMap from the constructor.
 * 
 * @param  the bean Type
 */
public final class GwtBeanDescriptorImpl implements GwtBeanDescriptor {

  /**
   * Builder for {@link GwtBeanDescriptors}.
   *
   * @param  the bean Type
   */
  public static final class Builder {

    private final Class clazz;
    private final Map descriptorMap =
        new HashMap();
    private final Set> constraints =
        new HashSet>();
    private boolean isConstrained;

    private Builder(Class clazz) {
      this.clazz = clazz;
    }

    public Builder add(
        ConstraintDescriptor constraintDescriptor) {
      constraints.add(constraintDescriptor);
      return this;
    }

    public GwtBeanDescriptorImpl build() {
      return new GwtBeanDescriptorImpl(clazz, isConstrained, descriptorMap,
          constraints);
    }

    public Builder put(String key, PropertyDescriptor value) {
      descriptorMap.put(key, value);
      return this;
    }

    public Builder setConstrained(boolean isConstrained) {
      this.isConstrained = isConstrained;
      return this;
    }
  }

  public static  Builder builder(Class clazz) {
    return new Builder(clazz);
  }

  private final Class clazz;
  private final Set> constraints = new HashSet>();

  private final Map descriptorMap = new HashMap();
  private final boolean isBeanConstrained;

  private GwtBeanDescriptorImpl(Class clazz, boolean isConstrained,
      Map descriptorMap,
      Set> constraints) {
    super();
    this.clazz = clazz;
    this.isBeanConstrained = isConstrained;
    this.descriptorMap.putAll(descriptorMap);
    this.constraints.addAll(constraints);
  }

  public ConstraintFinder findConstraints() {
    // TODO(nchalko) implement
    return null;
  }

  public Set getConstrainedProperties() {
    return new HashSet(descriptorMap.values());
  }

  public Set> getConstraintDescriptors() {
    // Copy for safety
    return new HashSet>(constraints);
  }

  public PropertyDescriptor getConstraintsForProperty(String propertyName) {
    return descriptorMap.get(propertyName);
  }

  public Class getElementClass() {
    return clazz;
  }

  public boolean hasConstraints() {
    return !constraints.isEmpty();
  }

  public boolean isBeanConstrained() {
    return isBeanConstrained;
  }
}