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/* Woodstox XML processor
*
* Copyright (c) 2004- Tatu Saloranta, [email protected]
*
* Licensed under the License specified in the file LICENSE which is
* included with the source code.
* You may not use this file except in compliance with the License.
*
* 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 com.ctc.wstx.dtd;
import java.text.MessageFormat;
import javax.xml.stream.Location;
import javax.xml.stream.XMLStreamException;
import org.codehaus.stax2.validation.ValidationContext;
import org.codehaus.stax2.validation.XMLValidationProblem;
import org.codehaus.stax2.validation.XMLValidator;
import com.ctc.wstx.cfg.ErrorConsts;
/**
* Simple container class used to contain information about the default
* value for an attribute. Although for most use cases a simple String
* would suffice, there are cases where additional information is needed
* (especially status of 'broken' default values, which only need to be
* reported should the default value be needed).
*/
public final class DefaultAttrValue
{
/*
////////////////////////////////////////////////////
// Constants
////////////////////////////////////////////////////
*/
// // // Default value types
public final static int DEF_DEFAULT = 1;
public final static int DEF_IMPLIED = 2;
public final static int DEF_REQUIRED = 3;
public final static int DEF_FIXED = 4;
/*
////////////////////////////////////////////////////
// Singleton instances
////////////////////////////////////////////////////
*/
final static DefaultAttrValue sImplied = new DefaultAttrValue(DEF_IMPLIED);
final static DefaultAttrValue sRequired = new DefaultAttrValue(DEF_REQUIRED);
/*
////////////////////////////////////////////////////
// State
////////////////////////////////////////////////////
*/
final int mDefValueType;
/**
* Actual expanded textual content of the default attribute value;
* normalized if appropriate in this mode.
* Note that all entities have been expanded: if a GE/PE was undefined,
* and no fatal errors were reported (non-validating mode), the
* references were just silently removed, and matching entries added
* to mUndeclaredEntity
*/
private String mValue = null;
/**
* For now, let's only keep track of the first undeclared entity:
* can be extended if necessary.
*/
private UndeclaredEntity mUndeclaredEntity = null;
/*
////////////////////////////////////////////////////
// Life-cycle (creation, configuration)
////////////////////////////////////////////////////
*/
private DefaultAttrValue(int defValueType)
{
mDefValueType = defValueType;
}
public static DefaultAttrValue constructImplied() { return sImplied; }
public static DefaultAttrValue constructRequired() { return sRequired; }
public static DefaultAttrValue constructFixed() {
return new DefaultAttrValue(DEF_FIXED);
}
public static DefaultAttrValue constructOptional() {
return new DefaultAttrValue(DEF_DEFAULT);
}
public void setValue(String v) {
mValue = v;
}
public void addUndeclaredPE(String name, Location loc)
{
addUndeclaredEntity(name, loc, true);
}
public void addUndeclaredGE(String name, Location loc)
{
addUndeclaredEntity(name, loc, false);
}
public void reportUndeclared(ValidationContext ctxt, XMLValidator dtd)
throws XMLStreamException
{
mUndeclaredEntity.reportUndeclared(ctxt, dtd);
}
/*
////////////////////////////////////////////////////
// Accessors:
////////////////////////////////////////////////////
*/
public boolean hasUndeclaredEntities() {
return (mUndeclaredEntity != null);
}
public String getValue() {
return mValue;
}
/**
* @return Expanded default value String, if there were no problems
* (no undeclared entities), or null to indicate there were problems.
* In latter case, caller is to figure out exact type of the problem
* and report this appropriately to the application.
*/
public String getValueIfOk()
{
return (mUndeclaredEntity == null) ? mValue : null;
}
public boolean isRequired() {
return (this == sRequired);
}
public boolean isFixed() {
return (mDefValueType == DEF_FIXED);
}
public boolean hasDefaultValue() {
return (mDefValueType == DEF_DEFAULT)
|| (mDefValueType == DEF_FIXED);
}
/**
* Method used by the element to figure out if attribute needs "special"
* checking; basically if it's required, and/or has a default value.
* In both cases missing the attribute has specific consequences, either
* exception or addition of a default value.
*/
public boolean isSpecial() {
// Only non-special if #IMPLIED
return (this != sImplied);
}
/*
////////////////////////////////////////////////////
// Internal methods
////////////////////////////////////////////////////
*/
private void addUndeclaredEntity(String name, Location loc, boolean isPe)
{
if (mUndeclaredEntity == null) {
mUndeclaredEntity = new UndeclaredEntity(name, loc, isPe);
}
}
/*
////////////////////////////////////////////////////
// Helper class(es):
////////////////////////////////////////////////////
*/
final static class UndeclaredEntity
{
final String mName;
final boolean mIsPe;
final Location mLocation;
UndeclaredEntity(String name, Location loc, boolean isPe)
{
mName = name;
mIsPe = isPe;
mLocation = loc;
}
public void reportUndeclared(ValidationContext ctxt, XMLValidator dtd)
throws XMLStreamException
{
String msg = MessageFormat.format(ErrorConsts.ERR_DTD_UNDECLARED_ENTITY, new Object[] { (mIsPe ? "parsed" : "general"), mName });
XMLValidationProblem prob = new XMLValidationProblem
(mLocation, msg, XMLValidationProblem.SEVERITY_FATAL);
prob.setReporter(dtd);
ctxt.reportProblem(prob);
}
}
}
