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Java example source code file (TypeConverterBinding.java)

This example Java source code file (TypeConverterBinding.java) is included in the alvinalexander.com "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Java by Example" TM.

Learn more about this Java project at its project page.

Java - Java tags/keywords

element, matcher, object, override, string, typeconverter, typeconverterbinding, typeliteral

The TypeConverterBinding.java Java example source code

/**
 * Copyright (C) 2008 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.inject.spi;

import static com.google.common.base.Preconditions.checkNotNull;

import com.google.inject.Binder;
import com.google.inject.TypeLiteral;
import com.google.inject.internal.Errors;
import com.google.inject.matcher.Matcher;

/**
 * Registration of type converters for matching target types. Instances are created
 * explicitly in a module using {@link com.google.inject.Binder#convertToTypes(Matcher,
 * TypeConverter) convertToTypes()} statements:
 * <pre>
 *     convertToTypes(Matchers.only(TypeLiteral.get(DateTime.class)), new DateTimeConverter());</pre>
 *
 * @author jessewilson@google.com (Jesse Wilson)
 * @since 2.0
 */
public final class TypeConverterBinding implements Element {
  private final Object source;
  private final Matcher<? super TypeLiteral typeMatcher;
  private final TypeConverter typeConverter;

  /** @since 3.0 */
  public TypeConverterBinding(Object source, Matcher<? super TypeLiteral typeMatcher,
      TypeConverter typeConverter) {
    this.source = checkNotNull(source, "source");
    this.typeMatcher = checkNotNull(typeMatcher, "typeMatcher");
    this.typeConverter = checkNotNull(typeConverter, "typeConverter");
  }

  public Object getSource() {
    return source;
  }

  public Matcher<? super TypeLiteral getTypeMatcher() {
    return typeMatcher;
  }

  public TypeConverter getTypeConverter() {
    return typeConverter;
  }

  public <T> T acceptVisitor(ElementVisitor visitor) {
    return visitor.visit(this);
  }

  public void applyTo(Binder binder) {
    binder.withSource(getSource()).convertToTypes(typeMatcher, typeConverter);
  }

  @Override public String toString() {
    return typeConverter + " which matches " + typeMatcher
        + " (bound at " + Errors.convert(source) + ")";
  }
}

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