gshell-support/gshell-yarn/src/main/java/org/apache/geronimo/gshell/yarn/ToStringBuilder.java

/*
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License.  You may obtain a copy of the License at
 *
 *  http://www.apache.org/licenses/LICENSE-2.0
 *
 * 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 org.apache.geronimo.gshell.yarn;

//
// NOTE: Copied and massaged from commons-lang 2.3
//

/**
 * Porting/adapting commons-land muck to GShell Yarn.
 *
 * @version $Id$
 */
class ToStringBuilder
{
    private static ToStringStyle defaultStyle = ToStringStyle.DEFAULT_STYLE;

    public static ToStringStyle getDefaultStyle() {
        return defaultStyle;
    }

    public static String reflectionToString(Object object) {
        return ReflectionToStringBuilder.toString(object);
    }

    public static String reflectionToString(Object object, ToStringStyle style) {
        return ReflectionToStringBuilder.toString(object, style);
    }

    public static String reflectionToString(Object object, ToStringStyle style, boolean outputTransients) {
        return ReflectionToStringBuilder.toString(object, style, outputTransients, false, null);
    }

    public static String reflectionToString(
        Object object,
        ToStringStyle style,
        boolean outputTransients,
        Class reflectUpToClass) {
        return ReflectionToStringBuilder.toString(object, style, outputTransients, false, reflectUpToClass);
    }

    public static void setDefaultStyle(ToStringStyle style) {
        if (style == null) {
            throw new IllegalArgumentException("The style must not be null");
        }
        defaultStyle = style;
    }

    private final StringBuilder buffer;

    /**
     * The object being output.
     */
    private final Object object;

    /**
     * The style of output to use.
     */
    private final ToStringStyle style;

    public ToStringBuilder(Object object) {
        this(object, getDefaultStyle(), null);
    }

    public ToStringBuilder(Object object, ToStringStyle style) {
        this(object, style, null);
    }

    public ToStringBuilder(Object object, ToStringStyle style, StringBuilder buffer) {
        if (style == null) {
            style = getDefaultStyle();
        }
        if (buffer == null) {
            buffer = new StringBuilder(512);
        }
        this.buffer = buffer;
        this.style = style;
        this.object = object;

        style.appendStart(buffer, object);
    }

    public ToStringBuilder append(boolean value) {
        style.append(buffer, null, value);
        return this;
    }

    public ToStringBuilder append(boolean[] array) {
        style.append(buffer, null, array, null);
        return this;
    }

    public ToStringBuilder append(byte value) {
        style.append(buffer, null, value);
        return this;
    }

    public ToStringBuilder append(byte[] array) {
        style.append(buffer, null, array, null);
        return this;
    }

    public ToStringBuilder append(char value) {
        style.append(buffer, null, value);
        return this;
    }

    public ToStringBuilder append(char[] array) {
        style.append(buffer, null, array, null);
        return this;
    }

    public ToStringBuilder append(double value) {
        style.append(buffer, null, value);
        return this;
    }

    public ToStringBuilder append(double[] array) {
        style.append(buffer, null, array, null);
        return this;
    }

    public ToStringBuilder append(float value) {
        style.append(buffer, null, value);
        return this;
    }

    public ToStringBuilder append(float[] array) {
        style.append(buffer, null, array, null);
        return this;
    }

    public ToStringBuilder append(int value) {
        style.append(buffer, null, value);
        return this;
    }

    public ToStringBuilder append(int[] array) {
        style.append(buffer, null, array, null);
        return this;
    }

    public ToStringBuilder append(long value) {
        style.append(buffer, null, value);
        return this;
    }

    public ToStringBuilder append(long[] array) {
        style.append(buffer, null, array, null);
        return this;
    }

    public ToStringBuilder append(Object obj) {
        style.append(buffer, null, obj, null);
        return this;
    }

    public ToStringBuilder append(Object[] array) {
        style.append(buffer, null, array, null);
        return this;
    }

    public ToStringBuilder append(short value) {
        style.append(buffer, null, value);
        return this;
    }

    public ToStringBuilder append(short[] array) {
        style.append(buffer, null, array, null);
        return this;
    }

    public ToStringBuilder append(String fieldName, boolean value) {
        style.append(buffer, fieldName, value);
        return this;
    }

    public ToStringBuilder append(String fieldName, boolean[] array) {
        style.append(buffer, fieldName, array, null);
        return this;
    }

    public ToStringBuilder append(String fieldName, boolean[] array, boolean fullDetail) {
        style.append(buffer, fieldName, array, BooleanUtils_toBooleanObject(fullDetail));
        return this;
    }

    public ToStringBuilder append(String fieldName, byte value) {
        style.append(buffer, fieldName, value);
        return this;
    }

    public ToStringBuilder append(String fieldName, byte[] array) {
        style.append(buffer, fieldName, array, null);
        return this;
    }

    public ToStringBuilder append(String fieldName, byte[] array, boolean fullDetail) {
        style.append(buffer, fieldName, array, BooleanUtils_toBooleanObject(fullDetail));
        return this;
    }

    public ToStringBuilder append(String fieldName, char value) {
        style.append(buffer, fieldName, value);
        return this;
    }

    public ToStringBuilder append(String fieldName, char[] array) {
        style.append(buffer, fieldName, array, null);
        return this;
    }

    public ToStringBuilder append(String fieldName, char[] array, boolean fullDetail) {
        style.append(buffer, fieldName, array, BooleanUtils_toBooleanObject(fullDetail));
        return this;
    }

    public ToStringBuilder append(String fieldName, double value) {
        style.append(buffer, fieldName, value);
        return this;
    }

    public ToStringBuilder append(String fieldName, double[] array) {
        style.append(buffer, fieldName, array, null);
        return this;
    }

    public ToStringBuilder append(String fieldName, double[] array, boolean fullDetail) {
        style.append(buffer, fieldName, array, BooleanUtils_toBooleanObject(fullDetail));
        return this;
    }

    public ToStringBuilder append(String fieldName, float value) {
        style.append(buffer, fieldName, value);
        return this;
    }

    public ToStringBuilder append(String fieldName, float[] array) {
        style.append(buffer, fieldName, array, null);
        return this;
    }

    public ToStringBuilder append(String fieldName, float[] array, boolean fullDetail) {
        style.append(buffer, fieldName, array, BooleanUtils_toBooleanObject(fullDetail));
        return this;
    }

    public ToStringBuilder append(String fieldName, int value) {
        style.append(buffer, fieldName, value);
        return this;
    }

    public ToStringBuilder append(String fieldName, int[] array) {
        style.append(buffer, fieldName, array, null);
        return this;
    }

    public ToStringBuilder append(String fieldName, int[] array, boolean fullDetail) {
        style.append(buffer, fieldName, array, BooleanUtils_toBooleanObject(fullDetail));
        return this;
    }

    public ToStringBuilder append(String fieldName, long value) {
        style.append(buffer, fieldName, value);
        return this;
    }

    public ToStringBuilder append(String fieldName, long[] array) {
        style.append(buffer, fieldName, array, null);
        return this;
    }

    public ToStringBuilder append(String fieldName, long[] array, boolean fullDetail) {
        style.append(buffer, fieldName, array, BooleanUtils_toBooleanObject(fullDetail));
        return this;
    }

    public ToStringBuilder append(String fieldName, Object obj) {
        style.append(buffer, fieldName, obj, null);
        return this;
    }

    public ToStringBuilder append(String fieldName, Object obj, boolean fullDetail) {
        style.append(buffer, fieldName, obj, BooleanUtils_toBooleanObject(fullDetail));
        return this;
    }

    public ToStringBuilder append(String fieldName, Object[] array) {
        style.append(buffer, fieldName, array, null);
        return this;
    }

    public ToStringBuilder append(String fieldName, Object[] array, boolean fullDetail) {
        style.append(buffer, fieldName, array, BooleanUtils_toBooleanObject(fullDetail));
        return this;
    }

    public ToStringBuilder append(String fieldName, short value) {
        style.append(buffer, fieldName, value);
        return this;
    }

    public ToStringBuilder append(String fieldName, short[] array) {
        style.append(buffer, fieldName, array, null);
        return this;
    }

    public ToStringBuilder append(String fieldName, short[] array, boolean fullDetail) {
        style.append(buffer, fieldName, array, BooleanUtils_toBooleanObject(fullDetail));
        return this;
    }

    public ToStringBuilder appendAsObjectToString(Object object) {
        ObjectUtils_appendIdentityToString(this.getStringBuilder(), object);
        return this;
    }

    public ToStringBuilder appendSuper(String superToString) {
        if (superToString != null) {
            style.appendSuper(buffer, superToString);
        }
        return this;
    }

    public ToStringBuilder appendToString(String toString) {
        if (toString != null) {
            style.appendToString(buffer, toString);
        }
        return this;
    }

    public Object getObject() {
        return object;
    }

    public StringBuilder getStringBuilder() {
        return buffer;
    }

    public ToStringStyle getStyle() {
        return style;
    }

    public String toString() {
        if (this.getObject() == null) {
            this.getStringBuilder().append(this.getStyle().getNullText());
        } else {
            style.appendEnd(this.getStringBuilder(), this.getObject());
        }
        return this.getStringBuilder().toString();
    }

    //
    // NOTE: Unrolled from commons-lang bits
    //

    private static Boolean BooleanUtils_toBooleanObject(boolean bool) {
        return bool ? Boolean.TRUE : Boolean.FALSE;
    }
    
    private static StringBuilder ObjectUtils_appendIdentityToString(StringBuilder buffer, Object object) {
        if (object == null) {
            return null;
        }
        if (buffer == null) {
            buffer = new StringBuilder();
        }
        return buffer
            .append(object.getClass().getName())
            .append('@')
            .append(Integer.toHexString(System.identityHashCode(object)));
    }
}