| /* |
| * 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.vxquery.runtime.functions.type; |
| |
| import java.io.DataOutput; |
| |
| import org.apache.hyracks.algebricks.runtime.base.IScalarEvaluator; |
| import org.apache.hyracks.algebricks.runtime.base.IScalarEvaluatorFactory; |
| import org.apache.hyracks.api.context.IHyracksTaskContext; |
| import org.apache.hyracks.api.exceptions.HyracksDataException; |
| import org.apache.hyracks.data.std.api.IPointable; |
| import org.apache.hyracks.data.std.util.ArrayBackedValueStorage; |
| import org.apache.vxquery.datamodel.accessors.TaggedValuePointable; |
| import org.apache.vxquery.datamodel.accessors.TypedPointables; |
| import org.apache.vxquery.datamodel.values.ValueTag; |
| import org.apache.vxquery.exceptions.ErrorCode; |
| import org.apache.vxquery.exceptions.SystemException; |
| import org.apache.vxquery.runtime.functions.cast.AbstractCastToOperation; |
| import org.apache.vxquery.runtime.functions.cast.CastToDoubleOperation; |
| import org.apache.vxquery.runtime.functions.cast.CastToFloatOperation; |
| import org.apache.vxquery.runtime.functions.cast.CastToStringOperation; |
| import org.apache.vxquery.types.BuiltinTypeRegistry; |
| import org.apache.vxquery.types.SequenceType; |
| |
| public class PromoteScalarEvaluatorFactory extends AbstractTypeScalarEvaluatorFactory { |
| private static final long serialVersionUID = 1L; |
| |
| public PromoteScalarEvaluatorFactory(IScalarEvaluatorFactory[] args) { |
| super(args); |
| } |
| |
| @Override |
| protected IScalarEvaluator createEvaluator(IHyracksTaskContext ctx, IScalarEvaluator[] args) |
| throws HyracksDataException { |
| return new AbstractTypeScalarEvaluator(args, ctx) { |
| final ArrayBackedValueStorage abvs = new ArrayBackedValueStorage(); |
| final DataOutput dOut = abvs.getDataOutput(); |
| final TypedPointables tp = new TypedPointables(); |
| AbstractCastToOperation aOp = new CastToStringOperation(); |
| int castToTag = 0; |
| |
| @Override |
| protected void evaluate(TaggedValuePointable tvp, IPointable result) throws SystemException { |
| abvs.reset(); |
| int tid = tvp.getTag(); |
| if (castToTag == -1 || castToTag == 0) { |
| // The promote type is not supported. No change. |
| result.set(tvp); |
| return; |
| } else if (castToTag > 0) { |
| try { |
| switch (tid) { |
| case ValueTag.XS_ANY_URI_TAG: |
| tvp.getValue(tp.utf8sp); |
| aOp.convertAnyURI(tp.utf8sp, dOut); |
| result.set(abvs.getByteArray(), abvs.getStartOffset(), abvs.getLength()); |
| break; |
| |
| case ValueTag.XS_BYTE_TAG: |
| tvp.getValue(tp.bytep); |
| aOp.convertByte(tp.bytep, dOut); |
| result.set(abvs.getByteArray(), abvs.getStartOffset(), abvs.getLength()); |
| break; |
| |
| case ValueTag.XS_DECIMAL_TAG: |
| tvp.getValue(tp.decp); |
| aOp.convertDecimal(tp.decp, dOut); |
| result.set(abvs.getByteArray(), abvs.getStartOffset(), abvs.getLength()); |
| break; |
| |
| case ValueTag.XS_DOUBLE_TAG: |
| tvp.getValue(tp.doublep); |
| aOp.convertDouble(tp.doublep, dOut); |
| result.set(abvs.getByteArray(), abvs.getStartOffset(), abvs.getLength()); |
| break; |
| |
| case ValueTag.XS_FLOAT_TAG: |
| tvp.getValue(tp.floatp); |
| aOp.convertFloat(tp.floatp, dOut); |
| result.set(abvs.getByteArray(), abvs.getStartOffset(), abvs.getLength()); |
| break; |
| |
| case ValueTag.XS_INT_TAG: |
| tvp.getValue(tp.intp); |
| aOp.convertInt(tp.intp, dOut); |
| result.set(abvs.getByteArray(), abvs.getStartOffset(), abvs.getLength()); |
| break; |
| |
| case ValueTag.XS_INTEGER_TAG: |
| tvp.getValue(tp.longp); |
| aOp.convertInteger(tp.longp, dOut); |
| result.set(abvs.getByteArray(), abvs.getStartOffset(), abvs.getLength()); |
| break; |
| |
| case ValueTag.XS_LONG_TAG: |
| tvp.getValue(tp.longp); |
| aOp.convertLong(tp.longp, dOut); |
| result.set(abvs.getByteArray(), abvs.getStartOffset(), abvs.getLength()); |
| break; |
| |
| case ValueTag.XS_NEGATIVE_INTEGER_TAG: |
| tvp.getValue(tp.longp); |
| aOp.convertNegativeInteger(tp.longp, dOut); |
| result.set(abvs.getByteArray(), abvs.getStartOffset(), abvs.getLength()); |
| break; |
| |
| case ValueTag.XS_NON_NEGATIVE_INTEGER_TAG: |
| tvp.getValue(tp.longp); |
| aOp.convertNonNegativeInteger(tp.longp, dOut); |
| result.set(abvs.getByteArray(), abvs.getStartOffset(), abvs.getLength()); |
| break; |
| |
| case ValueTag.XS_NON_POSITIVE_INTEGER_TAG: |
| tvp.getValue(tp.longp); |
| aOp.convertNonPositiveInteger(tp.longp, dOut); |
| result.set(abvs.getByteArray(), abvs.getStartOffset(), abvs.getLength()); |
| break; |
| |
| case ValueTag.XS_POSITIVE_INTEGER_TAG: |
| tvp.getValue(tp.longp); |
| aOp.convertPositiveInteger(tp.longp, dOut); |
| result.set(abvs.getByteArray(), abvs.getStartOffset(), abvs.getLength()); |
| break; |
| |
| case ValueTag.XS_SHORT_TAG: |
| tvp.getValue(tp.shortp); |
| aOp.convertShort(tp.shortp, dOut); |
| result.set(abvs.getByteArray(), abvs.getStartOffset(), abvs.getLength()); |
| break; |
| |
| case ValueTag.XS_STRING_TAG: |
| tvp.getValue(tp.utf8sp); |
| aOp.convertString(tp.utf8sp, dOut); |
| result.set(abvs.getByteArray(), abvs.getStartOffset(), abvs.getLength()); |
| break; |
| |
| case ValueTag.XS_UNSIGNED_BYTE_TAG: |
| tvp.getValue(tp.shortp); |
| aOp.convertUnsignedByte(tp.shortp, dOut); |
| result.set(abvs.getByteArray(), abvs.getStartOffset(), abvs.getLength()); |
| break; |
| |
| case ValueTag.XS_UNSIGNED_INT_TAG: |
| tvp.getValue(tp.longp); |
| aOp.convertUnsignedInt(tp.longp, dOut); |
| result.set(abvs.getByteArray(), abvs.getStartOffset(), abvs.getLength()); |
| break; |
| |
| case ValueTag.XS_UNSIGNED_LONG_TAG: |
| tvp.getValue(tp.longp); |
| aOp.convertUnsignedLong(tp.longp, dOut); |
| result.set(abvs.getByteArray(), abvs.getStartOffset(), abvs.getLength()); |
| break; |
| |
| case ValueTag.XS_UNSIGNED_SHORT_TAG: |
| tvp.getValue(tp.intp); |
| aOp.convertUnsignedShort(tp.intp, dOut); |
| result.set(abvs.getByteArray(), abvs.getStartOffset(), abvs.getLength()); |
| break; |
| |
| default: |
| // Promote type does not require us to change the value. |
| result.set(tvp); |
| break; |
| } |
| } catch (SystemException se) { |
| throw se; |
| } catch (Exception e) { |
| throw new SystemException(ErrorCode.SYSE0001, e); |
| } |
| } |
| } |
| |
| @Override |
| protected void setSequenceType(SequenceType sType) { |
| if (sType.getItemType() == BuiltinTypeRegistry.XS_DOUBLE) { |
| castToTag = ValueTag.XS_DOUBLE_TAG; |
| aOp = new CastToDoubleOperation(); |
| } else if (sType.getItemType() == BuiltinTypeRegistry.XS_FLOAT) { |
| castToTag = ValueTag.XS_FLOAT_TAG; |
| aOp = new CastToFloatOperation(); |
| } else if (sType.getItemType() == BuiltinTypeRegistry.XS_STRING) { |
| castToTag = ValueTag.XS_STRING_TAG; |
| aOp = new CastToStringOperation(); |
| } else { |
| castToTag = -1; |
| } |
| } |
| }; |
| } |
| } |