content: /*
   * Copyright 1999-2017 Alibaba Group Holding Ltd.
   *
   * 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.alibaba.druid.sql.ast.statement;
  
  import com.alibaba.druid.sql.ast.SQLName;
  import com.alibaba.druid.sql.visitor.SQLASTVisitor;
  
  import java.util.ArrayList;
  import java.util.List;
  
  public class SQLForeignKeyImpl extends SQLConstraintImpl implements SQLForeignKeyConstraint {
      private SQLExprTableSource referencedTable;
      private List<SQLName> referencingColumns = new ArrayList<SQLName>();
      private List<SQLName> referencedColumns = new ArrayList<SQLName>();
      private boolean onDeleteCascade;
      private boolean onDeleteSetNull;
      private boolean disableNovalidate;
  
      private boolean hasConstraint;
      private boolean notEnforced;
  
      public SQLForeignKeyImpl() {
      }
  
      public boolean isHasConstraint() {
          return hasConstraint;
      }
  
      public void setHasConstraint(boolean hasConstraint) {
          this.hasConstraint = hasConstraint;
      }
  
      @Override
      public List<SQLName> getReferencingColumns() {
          return referencingColumns;
      }
  
      @Override
      public SQLExprTableSource getReferencedTable() {
          return referencedTable;
      }
  
      @Override
      public SQLName getReferencedTableName() {
          if (referencedTable == null) {
              return null;
          }
          return referencedTable.getName();
      }
  
      @Override
      public void setReferencedTableName(SQLName value) {
          if (value == null) {
              this.referencedTable = null;
              return;
          }
          this.setReferencedTable(new SQLExprTableSource(value));
      }
  
      public void setReferencedTable(SQLExprTableSource x) {
          if (x != null) {
              x.setParent(this);
          }
          this.referencedTable = x;
      }
  
      @Override
      public List<SQLName> getReferencedColumns() {
          return referencedColumns;
      }
  
      public boolean isOnDeleteCascade() {
          return onDeleteCascade;
      }
  
      public void setOnDeleteCascade(boolean onDeleteCascade) {
          this.onDeleteCascade = onDeleteCascade;
      }
  
      public boolean isOnDeleteSetNull() {
          return onDeleteSetNull;
      }
  
      public void setOnDeleteSetNull(boolean onDeleteSetNull) {
          this.onDeleteSetNull = onDeleteSetNull;
      }
  
      public boolean isDisableNovalidate() {
          return disableNovalidate;
      }
  
      public void setDisableNovalidate(boolean disableNovalidate) {
          this.disableNovalidate = disableNovalidate;
      }
  
      @Override
      protected void accept0(SQLASTVisitor visitor) {
          if (visitor.visit(this)) {
              acceptChild(visitor, this.getName());
              acceptChild(visitor, this.getReferencedTableName());
              acceptChild(visitor, this.getReferencingColumns());
              acceptChild(visitor, this.getReferencedColumns());
          }
          visitor.endVisit(this);
      }
  
      public void cloneTo(SQLForeignKeyImpl x) {
          super.cloneTo(x);
  
          if (referencedTable != null) {
              x.setReferencedTable(referencedTable.clone());
          }
  
          for (SQLName column : referencingColumns) {
              SQLName columnClone = column.clone();
              columnClone.setParent(x);
              x.getReferencingColumns().add(columnClone);
          }
  
          for (SQLName column : referencedColumns) {
              SQLName columnClone = column.clone();
              columnClone.setParent(x);
              x.getReferencedColumns().add(columnClone);
          }
      }
  
      public SQLForeignKeyImpl clone() {
          SQLForeignKeyImpl x = new SQLForeignKeyImpl();
          cloneTo(x);
          return x;
      }
  
      public boolean isNotEnforced() {
          return notEnforced;
      }
  
      public void setNotEnforced(boolean notEnforced) {
          this.notEnforced = notEnforced;
      }
  
      public static enum Match {
          FULL("FULL"), PARTIAL("PARTIAL"), SIMPLE("SIMPLE");
  
          public final String name;
          public final String nameLCase;
  
          Match(String name) {
              this.name = name;
              this.nameLCase = name.toLowerCase();
          }
      }
  
      public static enum On {
          DELETE("DELETE"),
          UPDATE("UPDATE");
  
          public final String name;
          public final String nameLCase;
  
          On(String name) {
              this.name = name;
              this.nameLCase = name.toLowerCase();
          }
      }
  
      public static enum Option {
          RESTRICT("RESTRICT"), CASCADE("CASCADE"), SET_NULL("SET NULL"), NO_ACTION("NO ACTION"), SET_DEFAULT("SET DEFAULT");
  
          public final String name;
          public final String nameLCase;
  
          Option(String name) {
              this.name = name;
              this.nameLCase = name.toLowerCase();
          }
  
          public String getText() {
              return name;
          }
  
      }
  }
  