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**vngx-jsch** (beta) is an updated version of the popular JSch SSH library
written in pure Java. It has been updated to Java 6 with all the latest
language features and improved code clarity.
/*
* Copyright (c) 2010-2011 Michael Laudati, N1 Concepts LLC.
*
* 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.
*
* 3. The names of the authors may not be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED 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 N1
* CONCEPTS LLC OR ANY CONTRIBUTORS TO THIS SOFTWARE 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 org.vngx.jsch.config;
/**
* Implementation of {@code PropertyValidator} for validating numeric properties
* values.
*
* @author Michael Laudati
*/
public class NumberPropertyValidator extends PropertyValidator {
/**
* Creates a new instance of {@code NumberPropertyValidator} with the
* specified default value.
*
* @param defaultValue
*/
protected NumberPropertyValidator(int defaultValue) {
super(String.valueOf(defaultValue));
}
/**
* Returns a {@code NumberPropertyValidator} which checks if the property is
* a valid {@code int} and has the specified default value.
*
* @param defaultValue of integer property
* @return validator
*/
public static NumberPropertyValidator createValidator(int defaultValue) {
return new NumberPropertyValidator(defaultValue);
}
/**
* Returns a {@code NumberPropertyValidator} which checks if the property is
* a valid {@code int}, is greater than or equal to the {@code min} value
* and less than or equal to the {@code max} value.
*
* @param min value of property
* @param max value of property
* @param defaultValue of integer property
* @return validator
*/
public static NumberPropertyValidator createValidator(final int min, final int max, int defaultValue) {
return new NumberPropertyValidator(defaultValue) {
@Override protected boolean isPropertyValid(String property) {
try {
int value = Integer.parseInt(property);
return value >= min && value <= max;
} catch(Exception e) {
return false;
}
}
};
}
/**
* Returns a {@code NumberPropertyValidator} which checks if the property is
* a valid {@code int} and is greater than or equal to the {@code min}
* value.
*
* @param min value of property
* @param defaultValue of integer property
* @return validator
*/
public static NumberPropertyValidator createMinValidator(final int min, int defaultValue) {
return new NumberPropertyValidator(defaultValue) {
@Override protected boolean isPropertyValid(String property) {
try {
int value = Integer.parseInt(property);
return value >= min;
} catch(Exception e) {
return false;
}
}
};
}
/**
* Returns a {@code NumberPropertyValidator} which checks if the property is
* a valid {@code int} and less than or equal to the {@code max} value.
*
* @param max value of property
* @param defaultValue of integer property
* @return validator
*/
public static NumberPropertyValidator createMaxValidator(final int max, int defaultValue) {
return new NumberPropertyValidator(defaultValue) {
@Override protected boolean isPropertyValid(String property) {
try {
int value = Integer.parseInt(property);
return value <= max;
} catch(Exception e) {
return false;
}
}
};
}
@Override
protected boolean isPropertyValid(String property) {
return isInteger(property);
}
/**
* Returns true if the specified property is not null and is an integer.
*
* @param property value to check if integer
* @return true if value is integer
*/
protected static boolean isInteger(String property) {
try {
Integer.parseInt(property);
return true;
} catch(Exception e) {
return false;
}
}
}