Package org.apache.vxquery.runtime.functions.bool

Source Code of org.apache.vxquery.runtime.functions.bool.FnBooleanScalarEvaluatorFactory

/*
* 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.bool;

import org.apache.vxquery.datamodel.accessors.SequencePointable;
import org.apache.vxquery.datamodel.accessors.TaggedValuePointable;
import org.apache.vxquery.datamodel.accessors.atomic.XSDecimalPointable;
import org.apache.vxquery.datamodel.values.ValueTag;
import org.apache.vxquery.datamodel.values.XDMConstants;
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 edu.uci.ics.hyracks.algebricks.common.exceptions.AlgebricksException;
import edu.uci.ics.hyracks.algebricks.runtime.base.IScalarEvaluator;
import edu.uci.ics.hyracks.algebricks.runtime.base.IScalarEvaluatorFactory;
import edu.uci.ics.hyracks.api.context.IHyracksTaskContext;
import edu.uci.ics.hyracks.data.std.api.IPointable;
import edu.uci.ics.hyracks.data.std.primitive.BytePointable;
import edu.uci.ics.hyracks.data.std.primitive.DoublePointable;
import edu.uci.ics.hyracks.data.std.primitive.FloatPointable;
import edu.uci.ics.hyracks.data.std.primitive.IntegerPointable;
import edu.uci.ics.hyracks.data.std.primitive.LongPointable;
import edu.uci.ics.hyracks.data.std.primitive.ShortPointable;
import edu.uci.ics.hyracks.data.std.primitive.UTF8StringPointable;

public class FnBooleanScalarEvaluatorFactory extends AbstractTaggedValueArgumentScalarEvaluatorFactory {
    private static final long serialVersionUID = 1L;

    public FnBooleanScalarEvaluatorFactory(IScalarEvaluatorFactory[] args) {
        super(args);
    }

    @Override
    protected IScalarEvaluator createEvaluator(IHyracksTaskContext ctx, IScalarEvaluator[] args)
            throws AlgebricksException {
        final SequencePointable seqp = new SequencePointable();
        final LongPointable lp = (LongPointable) LongPointable.FACTORY.createPointable();
        final IntegerPointable ip = (IntegerPointable) IntegerPointable.FACTORY.createPointable();
        final ShortPointable sp = (ShortPointable) ShortPointable.FACTORY.createPointable();
        final BytePointable bp = (BytePointable) BytePointable.FACTORY.createPointable();
        final XSDecimalPointable decp = (XSDecimalPointable) XSDecimalPointable.FACTORY.createPointable();
        final DoublePointable dp = (DoublePointable) DoublePointable.FACTORY.createPointable();
        final FloatPointable fp = (FloatPointable) FloatPointable.FACTORY.createPointable();
        final UTF8StringPointable utf8p = (UTF8StringPointable) UTF8StringPointable.FACTORY.createPointable();
        return new AbstractTaggedValueArgumentScalarEvaluator(args) {
            @Override
            protected void evaluate(TaggedValuePointable[] args, IPointable result) throws SystemException {
                TaggedValuePointable tvp = args[0];
                switch (tvp.getTag()) {
                    case ValueTag.SEQUENCE_TAG: {
                        tvp.getValue(seqp);
                        if (seqp.getEntryCount() == 0) {
                            XDMConstants.setFalse(result);
                            return;
                        }
                        XDMConstants.setTrue(result);
                        return;
                    }

                    case ValueTag.XS_BOOLEAN_TAG: {
                        result.set(tvp);
                        return;
                    }

                    case ValueTag.XS_DECIMAL_TAG: {
                        tvp.getValue(decp);
                        if (decp.longValue() == 0) {
                            XDMConstants.setFalse(result);
                            return;
                        }
                        XDMConstants.setTrue(result);
                        return;
                    }

                    case ValueTag.XS_INTEGER_TAG:
                    case ValueTag.XS_LONG_TAG:
                    case ValueTag.XS_NEGATIVE_INTEGER_TAG:
                    case ValueTag.XS_NON_POSITIVE_INTEGER_TAG:
                    case ValueTag.XS_NON_NEGATIVE_INTEGER_TAG:
                    case ValueTag.XS_POSITIVE_INTEGER_TAG:
                    case ValueTag.XS_UNSIGNED_INT_TAG:
                    case ValueTag.XS_UNSIGNED_LONG_TAG: {
                        tvp.getValue(lp);
                        if (lp.longValue() == 0) {
                            XDMConstants.setFalse(result);
                            return;
                        }
                        XDMConstants.setTrue(result);
                        return;
                    }

                    case ValueTag.XS_INT_TAG:
                    case ValueTag.XS_UNSIGNED_SHORT_TAG: {
                        tvp.getValue(ip);
                        if (ip.intValue() == 0) {
                            XDMConstants.setFalse(result);
                            return;
                        }
                        XDMConstants.setTrue(result);
                        return;
                    }

                    case ValueTag.XS_SHORT_TAG:
                    case ValueTag.XS_UNSIGNED_BYTE_TAG: {
                        tvp.getValue(sp);
                        if (sp.shortValue() == 0) {
                            XDMConstants.setFalse(result);
                            return;
                        }
                        XDMConstants.setTrue(result);
                        return;
                    }

                    case ValueTag.XS_BYTE_TAG: {
                        tvp.getValue(bp);
                        if (bp.byteValue() == 0) {
                            XDMConstants.setFalse(result);
                            return;
                        }
                        XDMConstants.setTrue(result);
                        return;
                    }

                    case ValueTag.XS_DOUBLE_TAG: {
                        tvp.getValue(dp);
                        if (dp.doubleValue() == 0 || Double.isNaN(dp.doubleValue())) {
                            XDMConstants.setFalse(result);
                            return;
                        }
                        XDMConstants.setTrue(result);
                        return;
                    }

                    case ValueTag.XS_FLOAT_TAG: {
                        tvp.getValue(fp);
                        if (fp.floatValue() == 0 || Float.isNaN(fp.floatValue())) {
                            XDMConstants.setFalse(result);
                            return;
                        }
                        XDMConstants.setTrue(result);
                        return;
                    }

                    case ValueTag.XS_ANY_URI_TAG:
                    case ValueTag.XS_STRING_TAG: {
                        tvp.getValue(utf8p);
                        if (utf8p.getUTFLength() == 0) {
                            XDMConstants.setFalse(result);
                            return;
                        }
                        XDMConstants.setTrue(result);
                        return;
                    }
                }
                throw new SystemException(ErrorCode.FORG0006);
            }
        };
    }
}
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