content: /*
   * Licensed to the Apache Software Foundation (ASF) under one
   * or more contributor license agreements.  See the NOTICE file
   * distributed with this work for additional information
   * regarding copyright ownership.  The ASF licenses this file
   * to you 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 org.apache.asterix.optimizer.rules;
  
  import org.apache.asterix.column.validation.ColumnSupportedTypesValidator;
  import org.apache.asterix.common.config.DatasetConfig;
  import org.apache.asterix.common.metadata.DataverseName;
  import org.apache.asterix.metadata.declared.DataSource;
  import org.apache.asterix.metadata.declared.MetadataProvider;
  import org.apache.asterix.metadata.entities.Dataset;
  import org.apache.asterix.om.types.IAType;
  import org.apache.commons.lang3.mutable.Mutable;
  import org.apache.hyracks.algebricks.common.exceptions.AlgebricksException;
  import org.apache.hyracks.algebricks.core.algebra.base.ILogicalOperator;
  import org.apache.hyracks.algebricks.core.algebra.base.IOptimizationContext;
  import org.apache.hyracks.algebricks.core.algebra.base.LogicalOperatorTag;
  import org.apache.hyracks.algebricks.core.algebra.expressions.IVariableTypeEnvironment;
  import org.apache.hyracks.algebricks.core.algebra.operators.logical.InsertDeleteUpsertOperator;
  import org.apache.hyracks.algebricks.core.rewriter.base.IAlgebraicRewriteRule;
  import org.apache.hyracks.api.exceptions.SourceLocation;
  
  /**
   * This rule enforces that inserted or upserted records do not contain unsupported
   * types for {@link DatasetConfig.DatasetFormat#COLUMN} datasets.
   */
  public class EnsureColumnarSupportedTypesRule implements IAlgebraicRewriteRule {
      @Override
      public boolean rewritePre(Mutable<ILogicalOperator> opRef, IOptimizationContext context)
              throws AlgebricksException {
          ILogicalOperator op = opRef.getValue();
          if (op.getOperatorTag() != LogicalOperatorTag.INSERT_DELETE_UPSERT || context.checkIfInDontApplySet(this, op)) {
              return false;
          }
  
          InsertDeleteUpsertOperator modOp = (InsertDeleteUpsertOperator) op;
          // Do not apply the rule again to this operator
          context.addToDontApplySet(this, op);
  
          InsertDeleteUpsertOperator.Kind operation = modOp.getOperation();
          if (operation != InsertDeleteUpsertOperator.Kind.INSERT
                  && operation != InsertDeleteUpsertOperator.Kind.UPSERT) {
              return false;
          }
  
          DatasetConfig.DatasetFormat format = getFormat(modOp, context);
          if (format != DatasetConfig.DatasetFormat.COLUMN) {
              return false;
          }
  
          IVariableTypeEnvironment typeEnv = context.getOutputTypeEnvironment(modOp);
          IAType type = (IAType) typeEnv.getType(modOp.getPayloadExpression().getValue());
          SourceLocation srcLoc = modOp.getPayloadExpression().getValue().getSourceLocation();
          ColumnSupportedTypesValidator.validate(format, type, srcLoc);
  
          return false;
      }
  
      private DatasetConfig.DatasetFormat getFormat(InsertDeleteUpsertOperator modOp, IOptimizationContext context)
              throws AlgebricksException {
          MetadataProvider metadataProvider = (MetadataProvider) context.getMetadataProvider();
          DataSource dataSource = (DataSource) modOp.getDataSource();
          if (dataSource == null) {
              return null;
          }
          DataverseName dataverse = dataSource.getId().getDataverseName();
          String datasetName = dataSource.getId().getDatasourceName();
          String database = dataSource.getId().getDatabaseName();
          Dataset dataset = metadataProvider.findDataset(database, dataverse, datasetName);
          if (dataset != null) {
              return dataset.getDatasetFormatInfo().getFormat();
          }
  
          return null;
      }
  }
  