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/*
 * Copyright (c) 2005, 2022 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.txw2;

import java.util.AbstractList;
import java.util.Collections;
import java.util.List;
import javax.xml.namespace.QName;

/**
 * Pluggable datatype writer.
 *
 * @author Kohsuke Kawaguchi
 */
public interface DatatypeWriter
 {

    /**
     * Gets the Java class that this writer can write.
     *
     * @return
     *      must not be null. Must be the same value always.
     */
    Class
 getType();

    /**
     * Prints the given datatype object and appends that result
     * into the given buffer.
     *
     * @param dt
     *      the datatype object to be printed.
     * @param resolver
     *      allows the converter to declare additional namespace prefixes.
     * @param buf
     *      buffer
     */
    void print(DT dt, NamespaceResolver resolver, StringBuilder buf);

    List> BUILTIN = Collections.unmodifiableList(new AbstractList<>() {

        @SuppressWarnings({"unchecked", "rawtypes"})
        private DatatypeWriter[] BUILTIN_ARRAY = new DatatypeWriter[]{
                new DatatypeWriter() {
                    @Override
                    public Class getType() {
                        return String.class;
                    }

                    @Override
                    public void print(String s, NamespaceResolver resolver, StringBuilder buf) {
                        buf.append(s);
                    }
                },
                new DatatypeWriter() {
                    @Override
                    public Class getType() {
                        return Integer.class;
                    }

                    @Override
                    public void print(Integer i, NamespaceResolver resolver, StringBuilder buf) {
                        buf.append(i);
                    }
                },
                new DatatypeWriter() {
                    @Override
                    public Class getType() {
                        return Float.class;
                    }

                    @Override
                    public void print(Float f, NamespaceResolver resolver, StringBuilder buf) {
                        buf.append(f);
                    }
                },
                new DatatypeWriter() {
                    @Override
                    public Class getType() {
                        return Double.class;
                    }

                    @Override
                    public void print(Double d, NamespaceResolver resolver, StringBuilder buf) {
                        buf.append(d);
                    }
                },
                new DatatypeWriter() {
                    @Override
                    public Class getType() {
                        return QName.class;
                    }

                    @Override
                    public void print(QName qn, NamespaceResolver resolver, StringBuilder buf) {
                        String p = resolver.getPrefix(qn.getNamespaceURI());
                        if (p.length() != 0)
                            buf.append(p).append(':');
                        buf.append(qn.getLocalPart());
                    }
                }
        };

        @Override
        public DatatypeWriter get(int n) {
            return BUILTIN_ARRAY[n];
        }

        @Override
        public int size() {
            return BUILTIN_ARRAY.length;
        }
    });
}
 















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