AbstractAnnotationAttributeValue.java

package org.springframework.roo.classpath.details.annotations;

import org.apache.commons.lang3.Validate;
import org.springframework.roo.model.JavaSymbolName;

/**
 * Abstract base class for annotation attribute values.
 * 
 * @author Ben Alex
 * @since 1.0
 */
public abstract class AbstractAnnotationAttributeValue<T extends Object> implements
    AnnotationAttributeValue<T> {

  private final JavaSymbolName name;

  /**
   * Constructor
   * 
   * @param name the attribute name (required)
   */
  protected AbstractAnnotationAttributeValue(final JavaSymbolName name) {
    Validate.notNull(name, "Annotation attribute name required");
    this.name = name;
  }

  @Override
  public boolean equals(final Object obj) {
    if (this == obj) {
      return true;
    }
    if (obj == null) {
      return false;
    }
    if (!(obj instanceof AbstractAnnotationAttributeValue<?>)) {
      return false;
    }
    final AbstractAnnotationAttributeValue<?> other = (AbstractAnnotationAttributeValue<?>) obj;
    if (getValue() == null) {
      if (other.getValue() != null) {
        return false;
      }
    } else if (!getValue().equals(other.getValue())) {
      return false;
    }
    if (name == null) {
      if (other.name != null) {
        return false;
      }
    } else if (!name.equals(other.name)) {
      return false;
    }
    return true;
  }

  public JavaSymbolName getName() {
    return name;
  }

  @Override
  public int hashCode() {
    final int prime = 31;
    int result = 1;
    result = prime * result + (getValue() == null ? 0 : getValue().hashCode());
    result = prime * result + (name == null ? 0 : name.hashCode());
    return result;
  }
}