| /* |
| * 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 org.apache.vxquery.datamodel.accessors.SequencePointable; |
| import org.apache.vxquery.datamodel.accessors.TaggedValuePointable; |
| import org.apache.vxquery.datamodel.accessors.nodes.NodeTreePointable; |
| import org.apache.vxquery.datamodel.accessors.nodes.PINodePointable; |
| import org.apache.vxquery.datamodel.values.ValueTag; |
| import org.apache.vxquery.types.AnyItemType; |
| import org.apache.vxquery.types.AtomicType; |
| import org.apache.vxquery.types.AttributeType; |
| import org.apache.vxquery.types.BuiltinTypeRegistry; |
| import org.apache.vxquery.types.DocumentType; |
| import org.apache.vxquery.types.ElementType; |
| import org.apache.vxquery.types.ItemType; |
| import org.apache.vxquery.types.NodeKind; |
| import org.apache.vxquery.types.NodeType; |
| import org.apache.vxquery.types.ProcessingInstructionType; |
| import org.apache.vxquery.types.Quantifier; |
| import org.apache.vxquery.types.SchemaType; |
| import org.apache.vxquery.types.SequenceType; |
| |
| import org.apache.hyracks.data.std.primitive.UTF8StringPointable; |
| |
| public class SequenceTypeMatcher { |
| private final NodeTreePointable ntp = (NodeTreePointable) NodeTreePointable.FACTORY.createPointable(); |
| private final TaggedValuePointable tempTVP1 = (TaggedValuePointable) TaggedValuePointable.FACTORY.createPointable(); |
| private final PINodePointable pinp = (PINodePointable) PINodePointable.FACTORY.createPointable(); |
| private final UTF8StringPointable utf8sp = (UTF8StringPointable) UTF8StringPointable.FACTORY.createPointable(); |
| private final SequencePointable seqp = (SequencePointable) SequencePointable.FACTORY.createPointable(); |
| private final TaggedValuePointable tempTVP2 = (TaggedValuePointable) TaggedValuePointable.FACTORY.createPointable(); |
| |
| private SequenceType sequenceType; |
| |
| public boolean sequenceTypeMatch(TaggedValuePointable tvp) { |
| byte tag = tvp.getTag(); |
| Quantifier stq = sequenceType.getQuantifier(); |
| ItemType it = sequenceType.getItemType(); |
| if (tag == ValueTag.SEQUENCE_TAG) { |
| tvp.getValue(seqp); |
| Quantifier vq = getSequenceQuantifier(seqp); |
| if (stq.isSubQuantifier(vq)) { |
| if (it instanceof AnyItemType) { |
| return true; |
| } else { |
| int n = seqp.getEntryCount(); |
| for (int i = 0; i < n; ++i) { |
| seqp.getEntry(i, tempTVP2); |
| if (!itemSequenceTypeMatch(tempTVP2, it)) { |
| return false; |
| } |
| } |
| return true; |
| } |
| } |
| } else { |
| if (stq.isSubQuantifier(Quantifier.QUANT_ONE)) { |
| return itemSequenceTypeMatch(tvp, it); |
| } |
| } |
| return false; |
| } |
| |
| private boolean itemSequenceTypeMatch(TaggedValuePointable tvp, ItemType it) { |
| byte tag = tvp.getTag(); |
| if (it instanceof AnyItemType) { |
| return true; |
| } else if (it.isAtomicType()) { |
| AtomicType ait = (AtomicType) it; |
| if (BuiltinTypeRegistry.INSTANCE.isBuiltinTypeId(tag)) { |
| SchemaType vType = BuiltinTypeRegistry.INSTANCE.getSchemaTypeById(tag); |
| while (vType != null && vType.getTypeId() != ait.getTypeId()) { |
| vType = vType.getBaseType(); |
| } |
| return vType != null; |
| } |
| } else if (it instanceof NodeType && tag == ValueTag.NODE_TREE_TAG) { |
| NodeType nt = (NodeType) it; |
| NodeKind kind = nt.getNodeKind(); |
| if (kind == NodeKind.ANY) { |
| return true; |
| } else { |
| tvp.getValue(ntp); |
| ntp.getRootNode(tempTVP1); |
| switch (tempTVP1.getTag()) { |
| case ValueTag.ATTRIBUTE_NODE_TAG: |
| if (kind == NodeKind.ATTRIBUTE) { |
| if (nt.equals(AttributeType.ANYATTRIBUTE)) { |
| return true; |
| } else { |
| |
| } |
| } |
| break; |
| |
| case ValueTag.COMMENT_NODE_TAG: |
| return kind == NodeKind.ATTRIBUTE; |
| |
| case ValueTag.DOCUMENT_NODE_TAG: |
| if (kind == NodeKind.DOCUMENT) { |
| if (nt.equals(DocumentType.ANYDOCUMENT)) { |
| return true; |
| } else { |
| |
| } |
| } |
| break; |
| |
| case ValueTag.ELEMENT_NODE_TAG: |
| if (kind == NodeKind.ELEMENT) { |
| if (nt.equals(ElementType.ANYELEMENT)) { |
| return true; |
| } else { |
| |
| } |
| } |
| break; |
| |
| case ValueTag.PI_NODE_TAG: |
| if (kind == NodeKind.PI) { |
| if (nt.equals(ProcessingInstructionType.ANYPI)) { |
| return true; |
| } else { |
| ProcessingInstructionType pit = (ProcessingInstructionType) nt; |
| tempTVP1.getValue(pinp); |
| pinp.getTarget(ntp, utf8sp); |
| byte[] target = pit.getTarget(); |
| return utf8sp.compareTo(target, 0, target.length) == 0; |
| } |
| } |
| break; |
| |
| case ValueTag.TEXT_NODE_TAG: |
| return kind == NodeKind.TEXT; |
| } |
| } |
| } |
| return false; |
| } |
| |
| public boolean matchesAllInstances(SequenceType testST) { |
| Quantifier stq = sequenceType.getQuantifier(); |
| ItemType it = sequenceType.getItemType(); |
| if (stq.isSubQuantifier(testST.getQuantifier())) { |
| if (it instanceof AnyItemType) { |
| return true; |
| } else if (it.isAtomicType() && testST.getItemType().isAtomicType()) { |
| AtomicType ait = (AtomicType) it; |
| AtomicType testIT = (AtomicType) testST.getItemType(); |
| if (BuiltinTypeRegistry.INSTANCE.isBuiltinTypeId(testIT.getTypeId())) { |
| SchemaType vType = BuiltinTypeRegistry.INSTANCE.getSchemaTypeById(testIT.getTypeId()); |
| while (vType != null && vType.getTypeId() != ait.getTypeId()) { |
| vType = vType.getBaseType(); |
| } |
| return vType != null; |
| } |
| } else if (it instanceof NodeType && testST.getItemType() instanceof NodeType) { |
| NodeType nt = (NodeType) it; |
| NodeKind kind = nt.getNodeKind(); |
| NodeType testNT = (NodeType) testST.getItemType(); |
| NodeKind testKind = testNT.getNodeKind(); |
| if (kind == NodeKind.ANY || kind == testKind) { |
| return true; |
| } |
| } |
| return false; |
| } |
| return false; |
| } |
| |
| private Quantifier getSequenceQuantifier(SequencePointable seqp) { |
| switch (seqp.getEntryCount()) { |
| case 0: |
| return Quantifier.QUANT_ZERO; |
| |
| case 1: |
| return Quantifier.QUANT_ONE; |
| } |
| return Quantifier.QUANT_PLUS; |
| } |
| |
| public void setSequenceType(SequenceType sType) { |
| this.sequenceType = sType; |
| } |
| |
| public String toString() { |
| return "sequenceMatcher[" + this.sequenceType + "]"; |
| } |
| } |