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ElementValueParser.java
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ElementValueParser.java
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/*
* Copyright (c) 2020 Evolveum and contributors
*
* This work is dual-licensed under the Apache License 2.0
* and European Union Public License. See LICENSE file for details.
*/
package com.evolveum.midpoint.prism.impl.lex.dom;
import com.evolveum.midpoint.prism.impl.marshaller.ItemPathHolder;
import com.evolveum.midpoint.prism.marshaller.XNodeProcessorEvaluationMode;
import com.evolveum.midpoint.prism.xml.XmlTypeConverter;
import com.evolveum.midpoint.prism.xml.XsdTypeMapper;
import com.evolveum.midpoint.prism.xnode.ValueParser;
import com.evolveum.midpoint.util.DOMUtil;
import com.evolveum.midpoint.util.PrettyPrinter;
import com.evolveum.midpoint.util.exception.SchemaException;
import com.evolveum.prism.xml.ns._public.types_3.ItemPathType;
import org.jetbrains.annotations.NotNull;
import org.w3c.dom.Element;
import javax.annotation.concurrent.NotThreadSafe;
import javax.xml.namespace.QName;
import java.io.Serializable;
import java.util.Map;
/**
* Parser for element values.
*
* It can be used only for thread-confined structures because Xerces DOM structures are not thread safe. Even for reading!
*/
@NotThreadSafe
class ElementValueParser<T> implements ValueParser<T>, Serializable {
// element has no children nor application attributes
@NotNull private final Element element;
ElementValueParser(@NotNull Element element) {
this.element = element;
}
@Override
public T parse(QName typeName, XNodeProcessorEvaluationMode mode) throws SchemaException {
try {
if (ItemPathType.COMPLEX_TYPE.equals(typeName)) {
//noinspection unchecked
return (T) new ItemPathType(ItemPathHolder.parseFromElement(element));
} else {
Class<T> clazz = XsdTypeMapper.getXsdToJavaMapping(typeName);
if (clazz != null) {
return (T) XmlTypeConverter.toJavaValue(element, clazz);
} else if (DOMUtil.XSD_ANYTYPE.equals(typeName)) {
//noinspection unchecked
return (T) element.getTextContent(); // if parsing primitive as xsd:anyType, we can safely parse it as string
} else {
throw new SchemaException("Cannot convert element '" + element + "' to " + typeName);
}
}
} catch (IllegalArgumentException e) {
return DomLexicalProcessor.processIllegalArgumentException(element.getTextContent(), typeName, e, mode); // primitive way of ensuring compatibility mode
}
}
@Override
public boolean canParseAs(QName typeName) {
return ItemPathType.COMPLEX_TYPE.equals(typeName) ||
XsdTypeMapper.getXsdToJavaMapping(typeName) != null ||
DOMUtil.XSD_QNAME.equals(typeName);
}
@Override
public boolean isEmpty() {
return DOMUtil.isEmpty(element);
}
@Override
public String getStringValue() {
return element.getTextContent();
}
@Override
public Map<String, String> getPotentiallyRelevantNamespaces() {
return DOMUtil.getAllVisibleNamespaceDeclarations(element);
}
@Override
public String toString() {
return "ValueParser(DOMe, " + PrettyPrinter.prettyPrint(DOMUtil.getQName(element)) + ": " + element.getTextContent()
+ ")";
}
@Override
public ValueParser<T> freeze() {
return new DomLessValueParser<>(element);
}
}