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• DBConstraint.java

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com.rapiddweller.jdbacl.model.DBConstraint Maven / Gradle / Ivy

/*
 * (c) Copyright 2006-2014 by Volker Bergmann. All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, is permitted under the terms of the
 * GNU General Public License.
 *
 * For redistributing this software or a derivative work under a license other
 * than the GPL-compatible Free Software License as defined by the Free
 * Software Foundation or approved by OSI, you must first obtain a commercial
 * license to this software product from Volker Bergmann.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
 * WITHOUT A WARRANTY OF ANY KIND. ALL EXPRESS OR IMPLIED CONDITIONS,
 * REPRESENTATIONS AND WARRANTIES, INCLUDING ANY IMPLIED WARRANTY OF
 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT, ARE
 * HEREBY EXCLUDED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
 * POSSIBILITY OF SUCH DAMAGE.
 */

package com.rapiddweller.jdbacl.model;

import com.rapiddweller.common.ArrayFormat;
import com.rapiddweller.common.bean.HashCodeBuilder;

import java.util.Arrays;

/**
 * Parent class for all database constraints.


 * Created: 06.01.2007 08:58:49
 *
 * @author Volker Bergmann
 */
public abstract class DBConstraint extends AbstractDBTableComponent implements MultiColumnObject {

  private static final long serialVersionUID = 3768329019450975632L;

  private final boolean nameDeterministic;

  // interface -------------------------------------------------------------------------------------------------------

  /**
   * Instantiates a new Db constraint.
   *
   * @param name              the constraint name - it may be null
   * @param nameDeterministic the name deterministic
   * @param objectType        the object type
   * @param owner             the owner
   */
  public DBConstraint(String name, boolean nameDeterministic, String objectType, DBTable owner) {
    super(name, objectType, owner);
    this.nameDeterministic = nameDeterministic;
  }

  /**
   * Returns the columns which constitute this constraint
   *
   * @return the columns which constitute this constraint
   */
  @Override
  public abstract String[] getColumnNames();

  @Override
  public DBTable getTable() {
    return (DBTable) getOwner();
  }

  /**
   * Is name deterministic boolean.
   *
   * @return the boolean
   */
  public boolean isNameDeterministic() {
    return nameDeterministic;
  }

  // java.lang.Object overrides --------------------------------------------------------------------------------------

  @Override
  public boolean equals(Object o) {
    if (this == o) {
      return true;
    }
    if (o == null || getClass() != o.getClass()) {
      return false;
    }
    final DBConstraint that = (DBConstraint) o;
    return (this.getOwner().equals(that.getOwner())
        && Arrays.equals(this.getColumnNames(), that.getColumnNames()));
  }

  @Override
  public int hashCode() {
    return HashCodeBuilder.hashCode(this.getOwner(), getColumnNames());
  }

  @Override
  public String toString() {
    StringBuilder builder = new StringBuilder();
    builder.append(getClass().getSimpleName()).append('[').append(getOwner().getName()).append('[');
    builder.append(ArrayFormat.format(getColumnNames()));
    builder.append("]]");
    return builder.toString();
  }

}