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SchemaCrawler is an open-source Java API that makes working with database metadata as easy as working with plain old Java objects. SchemaCrawler is also a database schema discovery and comprehension, and schema documentation tool. You can search for database schema objects using regular expressions, and output the schema and data in a readable text format. The output is designed to be diff-ed against other database schemas.

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/*
========================================================================
SchemaCrawler
http://www.schemacrawler.com
Copyright (c) 2000-2024, Sualeh Fatehi .
All rights reserved.
------------------------------------------------------------------------

SchemaCrawler is distributed in the hope that it will be useful, but
WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.

SchemaCrawler and the accompanying materials are made available under
the terms of the Eclipse Public License v1.0, GNU General Public License
v3 or GNU Lesser General Public License v3.

You may elect to redistribute this code under any of these licenses.

The Eclipse Public License is available at:
http://www.eclipse.org/legal/epl-v10.html

The GNU General Public License v3 and the GNU Lesser General Public
License v3 are available at:
http://www.gnu.org/licenses/

========================================================================
*/

package schemacrawler.inclusionrule;

import java.util.Objects;
import java.util.regex.Pattern;

/**
 * Specifies exclusion patterns that can be applied to the names, definitions, and other attributes
 * of named objects.
 */
public final class RegularExpressionInclusionRule implements InclusionRuleWithRegularExpression {

  private static final long serialVersionUID = 6274652266761961575L;

  private final InclusionRule inclusionRule;

  /**
   * Set include pattern. Exclude nothing.
   *
   * @param patternInclude Inclusion pattern. If null, includes everything.
   */
  public RegularExpressionInclusionRule(final Pattern patternInclude) {
    if (patternInclude == null) {
      inclusionRule = new IncludeAll();
    } else {
      inclusionRule = new RegularExpressionRule(patternInclude, null);
    }
  }

  /**
   * Set include pattern. Exclude nothing.
   *
   * @param patternInclude Inclusion pattern. If null, includes everything.
   */
  public RegularExpressionInclusionRule(final String patternInclude) {
    this(patternInclude == null ? null : Pattern.compile(patternInclude));
  }

  @Override
  public boolean equals(final Object obj) {
    if (this == obj) {
      return true;
    }
    if (!(obj instanceof InclusionRuleWithRegularExpression)) {
      return false;
    }
    final InclusionRuleWithRegularExpression other = (InclusionRuleWithRegularExpression) obj;
    return getExclusionPattern().pattern().equals(other.getExclusionPattern().pattern())
        && getInclusionPattern().pattern().equals(other.getInclusionPattern().pattern());
  }

  @Override
  public Pattern getExclusionPattern() {
    if (inclusionRule instanceof InclusionRuleWithRegularExpression) {
      return ((InclusionRuleWithRegularExpression) inclusionRule).getExclusionPattern();
    } else {
      return InclusionRuleWithRegularExpression.super.getExclusionPattern();
    }
  }

  @Override
  public Pattern getInclusionPattern() {
    if (inclusionRule instanceof InclusionRuleWithRegularExpression) {
      return ((InclusionRuleWithRegularExpression) inclusionRule).getInclusionPattern();
    } else {
      return InclusionRuleWithRegularExpression.super.getInclusionPattern();
    }
  }

  @Override
  public int hashCode() {
    return Objects.hash(getExclusionPattern().pattern(), getInclusionPattern().pattern());
  }

  /** {@inheritDoc} */
  @Override
  public boolean test(final String text) {
    return inclusionRule.test(text);
  }

  /** {@inheritDoc} */
  @Override
  public String toString() {
    return inclusionRule.toString();
  }
}




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