// Copyright (c) 2003-present, Jodd Team (http://jodd.org)
// All rights reserved.
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are met:
//
// 1. Redistributions of source code must retain the above copyright notice,
// this list of conditions and the following disclaimer.
//
// 2. Redistributions in binary form must reproduce the above copyright
// notice, this list of conditions and the following disclaimer in the
// documentation and/or other materials provided with the distribution.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
// AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
// IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
// ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
// LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
// CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
// SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
// INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
// CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
// ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
// POSSIBILITY OF SUCH DAMAGE.
package jodd.mutable;
/**
* Creates {@link jodd.mutable.ValueHolder} instances.
*/
public class ValueHolderWrapper {
/**
* Creates new empty {@link jodd.mutable.ValueHolder}.
*/
public static <T> ValueHolder<T> create() {
return new ValueHolderImpl<>(null);
}
/**
* Wraps existing instance to {@link jodd.mutable.ValueHolder}.
*/
public static <T> ValueHolder<T> wrap(final T value) {
return new ValueHolderImpl<>(value);
}
static class ValueHolderImpl<T> implements ValueHolder<T> {
T value;
ValueHolderImpl(T v) {
this.value = v;
}
public T get() {
return value;
}
public void set(T value) {
this.value = value;
}
/**
* Simple to-string representation.
*/
@Override
public String toString() {
if (value == null) {
return "{null}";
}
return '{' + value.toString() + '}';
}
}
}