| /* |
| * 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.strings; |
| |
| import java.io.DataOutput; |
| import java.io.IOException; |
| |
| 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.primitive.UTF8StringPointable; |
| import org.apache.hyracks.data.std.util.ArrayBackedValueStorage; |
| import org.apache.hyracks.data.std.util.GrowableArray; |
| import org.apache.hyracks.data.std.util.UTF8StringBuilder; |
| 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.base.AbstractTaggedValueArgumentScalarEvaluator; |
| import org.apache.vxquery.runtime.functions.base.AbstractTaggedValueArgumentScalarEvaluatorFactory; |
| import org.apache.vxquery.runtime.functions.cast.CastToStringOperation; |
| import org.apache.vxquery.runtime.functions.util.FunctionHelper; |
| |
| public class FnConcatEvaluatorFactory extends AbstractTaggedValueArgumentScalarEvaluatorFactory { |
| private static final long serialVersionUID = 1L; |
| |
| public FnConcatEvaluatorFactory(IScalarEvaluatorFactory[] args) { |
| super(args); |
| } |
| |
| @Override |
| protected IScalarEvaluator createEvaluator(IHyracksTaskContext ctx, IScalarEvaluator[] args) |
| throws HyracksDataException { |
| final UTF8StringPointable stringp = (UTF8StringPointable) UTF8StringPointable.FACTORY.createPointable(); |
| final ArrayBackedValueStorage abvs = new ArrayBackedValueStorage(); |
| final ArrayBackedValueStorage abvsInner = new ArrayBackedValueStorage(); |
| final DataOutput dOutInner = abvsInner.getDataOutput(); |
| final CastToStringOperation castToString = new CastToStringOperation(); |
| final TypedPointables tp = new TypedPointables(); |
| final UTF8StringBuilder builder = new UTF8StringBuilder(); |
| final GrowableArray ga = new GrowableArray(); |
| |
| return new AbstractTaggedValueArgumentScalarEvaluator(args) { |
| @Override |
| protected void evaluate(TaggedValuePointable[] args, IPointable result) throws SystemException { |
| abvs.reset(); |
| |
| try { |
| // append each string to abvsBuilder |
| ga.reset(); |
| builder.reset(ga, 300); |
| |
| for (int i = 0; i < args.length; i++) { |
| TaggedValuePointable tvp = args[i]; |
| |
| // TODO Update function to support cast to a string from any atomic value. |
| if (!FunctionHelper.isDerivedFromString(tvp.getTag())) { |
| |
| try { |
| abvsInner.reset(); |
| switch (tvp.getTag()) { |
| case ValueTag.XS_ANY_URI_TAG: |
| tvp.getValue(tp.utf8sp); |
| castToString.convertAnyURI(tp.utf8sp, dOutInner); |
| break; |
| case ValueTag.XS_UNTYPED_ATOMIC_TAG: |
| tvp.getValue(tp.utf8sp); |
| castToString.convertUntypedAtomic(tp.utf8sp, dOutInner); |
| break; |
| case ValueTag.XS_BASE64_BINARY_TAG: |
| tvp.getValue(tp.binaryp); |
| castToString.convertBase64Binary(tp.binaryp, dOutInner); |
| break; |
| case ValueTag.XS_HEX_BINARY_TAG: |
| tvp.getValue(tp.binaryp); |
| castToString.convertHexBinary(tp.binaryp, dOutInner); |
| break; |
| case ValueTag.XS_BOOLEAN_TAG: |
| tvp.getValue(tp.boolp); |
| castToString.convertBoolean(tp.boolp, dOutInner); |
| break; |
| case ValueTag.XS_DATETIME_TAG: |
| tvp.getValue(tp.datetimep); |
| castToString.convertDatetime(tp.datetimep, dOutInner); |
| break; |
| case ValueTag.XS_DAY_TIME_DURATION_TAG: |
| tvp.getValue(tp.longp); |
| castToString.convertDTDuration(tp.longp, dOutInner); |
| break; |
| case ValueTag.XS_INTEGER_TAG: |
| case ValueTag.XS_NON_POSITIVE_INTEGER_TAG: |
| case ValueTag.XS_NEGATIVE_INTEGER_TAG: |
| case ValueTag.XS_LONG_TAG: |
| case ValueTag.XS_NON_NEGATIVE_INTEGER_TAG: |
| case ValueTag.XS_UNSIGNED_LONG_TAG: |
| case ValueTag.XS_POSITIVE_INTEGER_TAG: |
| case ValueTag.XS_UNSIGNED_INT_TAG: |
| tvp.getValue(tp.longp); |
| castToString.convertInteger(tp.longp, dOutInner); |
| break; |
| case ValueTag.XS_DURATION_TAG: |
| tvp.getValue(tp.durationp); |
| castToString.convertDuration(tp.durationp, dOutInner); |
| break; |
| case ValueTag.XS_DATE_TAG: |
| tvp.getValue(tp.datep); |
| castToString.convertDate(tp.datep, dOutInner); |
| break; |
| case ValueTag.XS_G_DAY_TAG: |
| tvp.getValue(tp.datep); |
| castToString.convertGDay(tp.datep, dOutInner); |
| break; |
| case ValueTag.XS_G_MONTH_DAY_TAG: |
| tvp.getValue(tp.datep); |
| castToString.convertGMonthDay(tp.datep, dOutInner); |
| break; |
| case ValueTag.XS_G_MONTH_TAG: |
| tvp.getValue(tp.datep); |
| castToString.convertGMonth(tp.datep, dOutInner); |
| break; |
| case ValueTag.XS_G_YEAR_MONTH_TAG: |
| tvp.getValue(tp.datep); |
| castToString.convertGYearMonth(tp.datep, dOutInner); |
| break; |
| case ValueTag.XS_G_YEAR_TAG: |
| tvp.getValue(tp.datep); |
| castToString.convertGYear(tp.datep, dOutInner); |
| break; |
| case ValueTag.XS_QNAME_TAG: |
| tvp.getValue(tp.qnamep); |
| castToString.convertQName(tp.qnamep, dOutInner); |
| break; |
| case ValueTag.XS_TIME_TAG: |
| tvp.getValue(tp.timep); |
| castToString.convertTime(tp.timep, dOutInner); |
| break; |
| case ValueTag.XS_YEAR_MONTH_DURATION_TAG: |
| tvp.getValue(tp.intp); |
| castToString.convertYMDuration(tp.intp, dOutInner); |
| break; |
| case ValueTag.XS_INT_TAG: |
| case ValueTag.XS_UNSIGNED_SHORT_TAG: |
| tvp.getValue(tp.intp); |
| castToString.convertInt(tp.intp, dOutInner); |
| break; |
| case ValueTag.XS_DECIMAL_TAG: |
| tvp.getValue(tp.decp); |
| castToString.convertDecimal(tp.decp, dOutInner); |
| break; |
| case ValueTag.XS_DOUBLE_TAG: |
| tvp.getValue(tp.doublep); |
| castToString.convertDouble(tp.doublep, dOutInner); |
| break; |
| case ValueTag.XS_FLOAT_TAG: |
| tvp.getValue(tp.floatp); |
| castToString.convertFloat(tp.floatp, dOutInner); |
| break; |
| case ValueTag.XS_SHORT_TAG: |
| case ValueTag.XS_UNSIGNED_BYTE_TAG: |
| tvp.getValue(tp.shortp); |
| castToString.convertShort(tp.shortp, dOutInner); |
| break; |
| case ValueTag.XS_BYTE_TAG: |
| tvp.getValue(tp.bytep); |
| castToString.convertByte(tp.bytep, dOutInner); |
| break; |
| case ValueTag.SEQUENCE_TAG: |
| tvp.getValue(tp.seqp); |
| if (tp.seqp.getEntryCount() == 0) { |
| // Byte Format: Type (1 byte) + String Length (2 bytes) + String. |
| dOutInner.write(ValueTag.XS_STRING_TAG); |
| dOutInner.write(0); |
| dOutInner.write(0); |
| break; |
| } |
| // Pass through if not empty sequence. |
| default: |
| throw new SystemException(ErrorCode.XPTY0004); |
| } |
| |
| // Remove tag. |
| stringp.set(abvsInner.getByteArray(), abvsInner.getStartOffset() + 1, |
| abvsInner.getLength() - 1); |
| } catch (IOException e) { |
| throw new SystemException(ErrorCode.SYSE0001, e); |
| } |
| } else { |
| tvp.getValue(stringp); |
| } |
| |
| // If its an empty string do nothing. |
| if (stringp.getStringLength() > 0) { |
| builder.appendUtf8StringPointable(stringp); |
| } |
| } |
| builder.finish(); |
| |
| // Add tag to string and write out. |
| DataOutput out = abvs.getDataOutput(); |
| out.write(ValueTag.XS_STRING_TAG); |
| out.write(ga.getByteArray(), 0, ga.getLength()); |
| result.set(abvs.getByteArray(), abvs.getStartOffset(), abvs.getLength()); |
| } catch (IOException e) { |
| throw new SystemException(ErrorCode.SYSE0001, e); |
| } |
| } |
| }; |
| } |
| |
| } |
