package org.kohsuke.rngom.ast.util;
import org.kohsuke.rngom.ast.builder.BuildException;
import org.kohsuke.rngom.ast.builder.SchemaBuilder;
import org.kohsuke.rngom.ast.om.ParsedPattern;
import org.kohsuke.rngom.binary.SchemaBuilderImpl;
import org.kohsuke.rngom.binary.SchemaPatternBuilder;
import org.kohsuke.rngom.parse.IllegalSchemaException;
import org.kohsuke.rngom.parse.host.ParsedPatternHost;
import org.kohsuke.rngom.parse.host.SchemaBuilderHost;
import org.relaxng.datatype.DatatypeLibraryFactory;
import org.xml.sax.ErrorHandler;
/**
* Wraps a {@link SchemaBuilder} and does all the semantic checks
* required by the RELAX NG spec.
*
* <h2>Usage</h2>
* <p>
* Whereas you normally write it as follows:
* <pre>
* YourParsedPattern r = (YourParsedPattern)parseable.parse(sb);
* </pre>
* write this as follows:
* <pre>
* YourParsedPattern r = (YourParsedPattern)parseable.parse(new CheckingSchemaBuilder(sb,eh));
* </pre>
*
* <p>
* The checking is done by using the <tt>rngom.binary</tt> package, so if you are using
* that package for parsing schemas, then there's no need to use this.
*
* @author
* Kohsuke Kawaguchi (kk@kohsuke.org)
*/
public class CheckingSchemaBuilder extends SchemaBuilderHost {
/**
*
* @param sb
* Your {@link SchemaBuilder} that parses RELAX NG schemas.
* @param eh
* All the errors found will be sent to this handler.
*/
public CheckingSchemaBuilder( SchemaBuilder sb, ErrorHandler eh ) {
super(new SchemaBuilderImpl(eh),sb);
}
public CheckingSchemaBuilder( SchemaBuilder sb, ErrorHandler eh, DatatypeLibraryFactory dlf ) {
super(new SchemaBuilderImpl(eh,dlf,new SchemaPatternBuilder()),sb);
}
public ParsedPattern expandPattern(ParsedPattern p)
throws BuildException, IllegalSchemaException {
// just return the result from the user-given SchemaBuilder
ParsedPatternHost r = (ParsedPatternHost)super.expandPattern(p);
return r.rhs;
}
}