com.sun.xml.xsom.XmlString Maven / Gradle / Ivy

Go to download

Show more of this group Show more artifacts with this name
Show all versions of xsom Show documentation

XML Schema Object Model (XSOM) is a Java library that allows applications to easily parse XML Schema documents and inspect information in them. It is expected to be useful for applications that need to take XML Schema as an input.

There is a newer version: 4.0.5

Show newest version

/*
 * Copyright (c) 1997, 2023 Oracle and/or its affiliates. All rights reserved.
 *
 * This program and the accompanying materials are made available under the
 * terms of the Eclipse Distribution License v. 1.0, which is available at
 * http://www.eclipse.org/org/documents/edl-v10.php.
 *
 * SPDX-License-Identifier: BSD-3-Clause
 */

package com.sun.xml.xsom;

import com.sun.tools.rngdatatype.ValidationContext;

/**
 * String with in-scope namespace binding information.
 *
 * 
 * In a general case, text (PCDATA/attributes) that appear in XML schema
 * cannot be correctly interpreted unless you also have in-scope namespace
 * binding (a case in point is QName.) Therefore, it's convenient to
 * handle the lexical representation and the in-scope namespace binding
 * in a pair.
 *
 * @author Kohsuke Kawaguchi
 */
@SuppressWarnings({"exports"})
public final class XmlString {
    /**
     * Textual value. AKA lexical representation.
     */
    public final String value;

    /**
     * Used to resole in-scope namespace bindings.
     */
    public final ValidationContext context;

    /**
     * Creates a new  from a lexical representation and in-scope namespaces.
     */
    public XmlString(String value, ValidationContext context) {
        this.value = value;
        this.context = context;
        if(context==null)
            throw new IllegalArgumentException();
    }

    /**
     * Creates a new  with empty in-scope namespace bindings.
     */
    public XmlString(String value) {
        this(value,NULL_CONTEXT);
    }

    /**
     * Resolves a namespace prefix to the corresponding namespace URI.
     *
     * This method is used for resolving prefixes in the {@link #value}
     * (such as when {@link #value} represents a QName type.)
     *
     * 

     * If the prefix is "" (empty string), the method
     * returns the default namespace URI.
     *
     * 
     * If the prefix is "xml", then the method returns
     * "http://www.w3.org/XML/1998/namespace",
     * as defined in the XML Namespaces Recommendation.
     *
     * @return
     *		namespace URI of this prefix.
     *		If the specified prefix is not declared,
     *		the implementation returns null.
     */
    public String resolvePrefix(String prefix) {
        return context.resolveNamespacePrefix(prefix);
    }

    public String toString() {
        return value;
    }

    private static final ValidationContext NULL_CONTEXT = new ValidationContext() {
        public String resolveNamespacePrefix(String s) {
            if(s.length()==0)   return "";
            if(s.equals("xml")) return "http://www.w3.org/XML/1998/namespace";
            return null;
        }

        public String getBaseUri() {
            return null;
        }

        public boolean isUnparsedEntity(String s) {
            return false;
        }

        public boolean isNotation(String s) {
            return false;
        }
    };
}