| /* Copyright 2004 The Apache Software Foundation |
| * |
| * Licensed 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.xmlbeans.impl.xpath.saxon; |
| |
| import org.apache.xmlbeans.*; |
| import org.apache.xmlbeans.impl.store.Cur; |
| import org.apache.xmlbeans.impl.store.DomImpl; |
| import org.apache.xmlbeans.impl.store.Locale; |
| import org.apache.xmlbeans.impl.xpath.XPathEngine; |
| import org.apache.xmlbeans.impl.xpath.XPathExecutionContext; |
| import org.w3c.dom.Node; |
| |
| import java.math.BigDecimal; |
| import java.text.DateFormat; |
| import java.text.SimpleDateFormat; |
| import java.util.ConcurrentModificationException; |
| import java.util.Date; |
| import java.util.List; |
| |
| public class SaxonXPathEngine extends XPathExecutionContext implements XPathEngine { |
| // full datetime format: yyyy-MM-dd'T'HH:mm:ss'Z' |
| private final DateFormat xmlDateFormat = new SimpleDateFormat("yyyy-MM-dd"); |
| |
| private Cur _cur; |
| private SaxonXPath _engine; |
| private boolean _firstCall = true; |
| private final long _version; |
| |
| |
| SaxonXPathEngine(SaxonXPath xpathImpl, Cur c) { |
| _engine = xpathImpl; |
| _version = c.getLocale().version(); |
| _cur = c.weakCur(this); |
| } |
| |
| public boolean next(Cur c) { |
| if (!_firstCall) { |
| return false; |
| } |
| |
| _firstCall = false; |
| |
| if (_cur != null && _version != _cur.getLocale().version()) { |
| throw new ConcurrentModificationException("Document changed during select"); |
| } |
| |
| List resultsList = _engine.selectPath(_cur.getDom()); |
| |
| int i; |
| for (i = 0; i < resultsList.size(); i++) { |
| //simple type function results |
| Object node = resultsList.get(i); |
| Cur pos = null; |
| if (!(node instanceof Node)) { |
| Object obj = resultsList.get(i); |
| String value; |
| if (obj instanceof Date) { |
| value = xmlDateFormat.format((Date) obj); |
| } else if (obj instanceof BigDecimal) { |
| value = ((BigDecimal) obj).toPlainString(); |
| } else { |
| value = obj.toString(); |
| } |
| |
| //we cannot leave the cursor's locale, as |
| //everything is done in the selections of this cursor |
| |
| org.apache.xmlbeans.impl.store.Locale l = c.getLocale(); |
| try { |
| pos = l.load("<xml-fragment/>").tempCur(); |
| pos.setValue(value); |
| SchemaType type = getType(node); |
| Locale.autoTypeDocument(pos, type, null); |
| //move the cur to the actual text |
| pos.next(); |
| } catch (Exception e) { |
| throw new RuntimeException(e); |
| } |
| } else { |
| assert (node instanceof DomImpl.Dom) : |
| "New object created in XPATH!"; |
| pos = ((DomImpl.Dom) node).tempCur(); |
| |
| } |
| c.addToSelection(pos); |
| pos.release(); |
| } |
| release(); |
| _engine = null; |
| return true; |
| } |
| |
| private SchemaType getType(Object node) { |
| SchemaType type; |
| if (node instanceof Integer) { |
| type = XmlInteger.type; |
| } else if (node instanceof Double) { |
| type = XmlDouble.type; |
| } else if (node instanceof Long) { |
| type = XmlLong.type; |
| } else if (node instanceof Float) { |
| type = XmlFloat.type; |
| } else if (node instanceof BigDecimal) { |
| type = XmlDecimal.type; |
| } else if (node instanceof Boolean) { |
| type = XmlBoolean.type; |
| } else if (node instanceof String) { |
| type = XmlString.type; |
| } else if (node instanceof Date) { |
| type = XmlDate.type; |
| } else { |
| type = XmlAnySimpleType.type; |
| } |
| return type; |
| } |
| |
| public void release() { |
| if (_cur != null) { |
| _cur.release(); |
| _cur = null; |
| } |
| } |
| |
| |
| } |