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.runtime.evaluators.functions;
  
  import org.apache.asterix.common.annotations.MissingNullInOutFunction;
  import org.apache.asterix.formats.nontagged.SerializerDeserializerProvider;
  import org.apache.asterix.om.base.AInt64;
  import org.apache.asterix.om.base.AMutableInt32;
  import org.apache.asterix.om.base.AMutableInt64;
  import org.apache.asterix.om.exceptions.ExceptionUtil;
  import org.apache.asterix.om.functions.BuiltinFunctions;
  import org.apache.asterix.om.functions.IFunctionDescriptorFactory;
  import org.apache.asterix.om.types.ATypeTag;
  import org.apache.asterix.om.types.BuiltinType;
  import org.apache.asterix.runtime.evaluators.base.AbstractScalarFunctionDynamicDescriptor;
  import org.apache.asterix.runtime.evaluators.common.ArgumentUtils;
  import org.apache.hyracks.algebricks.core.algebra.functions.FunctionIdentifier;
  import org.apache.hyracks.algebricks.runtime.base.IScalarEvaluator;
  import org.apache.hyracks.algebricks.runtime.base.IScalarEvaluatorFactory;
  import org.apache.hyracks.api.context.IEvaluatorContext;
  import org.apache.hyracks.api.dataflow.value.ISerializerDeserializer;
  import org.apache.hyracks.api.exceptions.HyracksDataException;
  import org.apache.hyracks.data.std.api.IPointable;
  import org.apache.hyracks.data.std.primitive.VoidPointable;
  import org.apache.hyracks.data.std.util.ArrayBackedValueStorage;
  import org.apache.hyracks.dataflow.common.data.accessors.IFrameTupleReference;
  import org.apache.hyracks.util.string.UTF8StringUtil;
  
  @MissingNullInOutFunction
  public class FromBaseDescriptor extends AbstractScalarFunctionDynamicDescriptor {
  
      private static final long serialVersionUID = 1L;
  
      public static final IFunctionDescriptorFactory FACTORY = FromBaseDescriptor::new;
  
      @Override
      public IScalarEvaluatorFactory createEvaluatorFactory(final IScalarEvaluatorFactory[] args) {
          return new IScalarEvaluatorFactory() {
              private static final long serialVersionUID = 1L;
  
              @Override
              public IScalarEvaluator createScalarEvaluator(final IEvaluatorContext ctx) throws HyracksDataException {
                  return new IScalarEvaluator() {
  
                      private final ArrayBackedValueStorage storage = new ArrayBackedValueStorage();
                      private final StringBuilder strBuilder = new StringBuilder();
                      private final IScalarEvaluator evalString = args[0].createScalarEvaluator(ctx);
                      private final IScalarEvaluator evalBase = args[1].createScalarEvaluator(ctx);
                      private final IPointable argString = new VoidPointable();
                      private final IPointable argNumber = new VoidPointable();
                      private final AMutableInt32 aInt32 = new AMutableInt32(0);
                      private final AMutableInt64 aInt64 = new AMutableInt64(0);
                      @SuppressWarnings("unchecked")
                      private final ISerializerDeserializer<AInt64> int64Serde =
                              SerializerDeserializerProvider.INSTANCE.getSerializerDeserializer(BuiltinType.AINT64);
  
                      @Override
                      public void evaluate(IFrameTupleReference tuple, IPointable result) throws HyracksDataException {
                          evalString.evaluate(tuple, argString);
                          evalBase.evaluate(tuple, argNumber);
  
                          if (PointableHelper.checkAndSetMissingOrNull(result, argString, argNumber)) {
                              return;
                          }
                          byte[] bytes = argNumber.getByteArray();
                          int offset = argNumber.getStartOffset();
                          if (!ArgumentUtils.setInteger(ctx, sourceLoc, getIdentifier(), 1, bytes, offset, aInt32)) {
                              PointableHelper.setNull(result);
                              return;
                          }
                          int base = aInt32.getIntegerValue();
                          if (base < 2 || base > 36) {
                              PointableHelper.setNull(result);
                              ExceptionUtil.warnValueOutOfRange(ctx, sourceLoc, getIdentifier(), 1, 2, 36, base);
                              return;
                          }
  
                          bytes = argString.getByteArray();
                          offset = argString.getStartOffset();
                          if (bytes[offset] != ATypeTag.SERIALIZED_STRING_TYPE_TAG) {
                              PointableHelper.setNull(result);
                              ExceptionUtil.warnTypeMismatch(ctx, sourceLoc, getIdentifier(), bytes[offset], 0,
                                      ATypeTag.STRING);
                              return;
                          }
                          strBuilder.setLength(0);
                          UTF8StringUtil.toString(strBuilder, bytes, offset + 1);
  
                          try {
                              aInt64.setValue(Long.parseLong(strBuilder, 0, strBuilder.length(), base));
                          } catch (NumberFormatException e) {
                              PointableHelper.setNull(result);
                              ExceptionUtil.warnFunctionEvalFailed(ctx, sourceLoc, getIdentifier(), e.getMessage());
                              return;
                          }
                          storage.reset();
                          int64Serde.serialize(aInt64, storage.getDataOutput());
                          result.set(storage);
                      }
                  };
              }
          };
      }
  
      @Override
      public FunctionIdentifier getIdentifier() {
          return BuiltinFunctions.FROM_BASE;
      }
  
  }
  