exec/java-exec/src/main/java/org/apache/drill/exec/exception/UnsupportedOperatorCollector.java

/**
 * 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.drill.exec.exception;

import org.apache.drill.exec.work.foreman.SqlUnsupportedException;
import org.apache.drill.exec.work.foreman.UnsupportedDataTypeException;
import org.apache.drill.exec.work.foreman.UnsupportedFunctionException;
import org.apache.drill.exec.work.foreman.UnsupportedRelOperatorException;

public class UnsupportedOperatorCollector {
  private SqlUnsupportedException.ExceptionType exceptionType;
  private String message;

  public UnsupportedOperatorCollector() {
    exceptionType = SqlUnsupportedException.ExceptionType.NONE;
  }

  public boolean convertException() throws SqlUnsupportedException {
    switch (exceptionType) {
      case RELATIONAL:
        clean();
        throw new UnsupportedRelOperatorException(message);
      case DATA_TYPE:
        clean();
        throw new UnsupportedDataTypeException(message);
      case FUNCTION:
        clean();
        throw new UnsupportedFunctionException(message);
      default:
        break;
    }

    return false;
  }

  public void setException(SqlUnsupportedException.ExceptionType exceptionType, String message) {
    if(this.exceptionType != SqlUnsupportedException.ExceptionType.NONE) {
      throw new IllegalStateException("Exception was set already");
    }

    this.exceptionType = exceptionType;
    this.message = message;
  }

  public void setException(SqlUnsupportedException.ExceptionType exceptionType) {
    setException(exceptionType, "");
  }

  public void clean() {
      exceptionType = SqlUnsupportedException.ExceptionType.NONE;
    }
}