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PropertyValidator.java
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PropertyValidator.java
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/**
* Copyright (c) 2012, Ben Fortuna
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* o Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* o 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.
*
* o Neither the name of Ben Fortuna nor the names of any other contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* 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 OWNER 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 net.fortuna.ical4j.validate;
import net.fortuna.ical4j.model.Property;
import net.fortuna.ical4j.model.PropertyList;
import net.fortuna.ical4j.util.CompatibilityHints;
import java.util.List;
import static net.fortuna.ical4j.validate.Validator.assertFalse;
/**
* $Id$ [15-May-2004]
*
* Defines methods for validating properties and property lists.
*
* @author Ben Fortuna
*/
public final class PropertyValidator implements Validator<Property> {
public static final String ASSERT_NONE_MESSAGE = "Property [{0}] is not applicable";
public static final String ASSERT_ONE_OR_LESS_MESSAGE = "Property [{0}] must only be specified once";
public static final String ASSERT_ONE_MESSAGE = "Property [{0}] must be specified once";
public static final String ASSERT_ONE_OR_MORE_MESSAGE = "Property [{0}] must be specified at least once";
private final List<ValidationRule> rules;
public PropertyValidator(List<ValidationRule> rules) {
this.rules = rules;
}
@Override
public void validate(Property target) throws ValidationException {
for (ValidationRule rule : rules) {
boolean warnOnly = CompatibilityHints.isHintEnabled(CompatibilityHints.KEY_RELAXED_VALIDATION)
&& rule.isRelaxedModeSupported();
switch (rule.getType()) {
case None:
rule.getInstances().forEach(s -> assertFalse(input -> input.getParameter(s) != null,
ParameterValidator.ASSERT_NONE_MESSAGE, warnOnly, target.getParameters(), s));
break;
case One:
rule.getInstances().forEach(s -> assertFalse(input -> input.getParameters(s).size() != 1,
ParameterValidator.ASSERT_ONE_MESSAGE, warnOnly, target.getParameters(), s));
break;
case OneOrLess:
rule.getInstances().forEach(s -> assertFalse(input -> input.getParameters(s).size() > 1,
ParameterValidator.ASSERT_ONE_OR_LESS_MESSAGE, warnOnly, target.getParameters(), s));
break;
}
}
}
/**
* Ensure a property occurs no more than once.
*
* @param propertyName
* the property name
* @param properties
* a list of properties to query
* @throws ValidationException
* when the specified property occurs more than once
*/
public static void assertOneOrLess(final String propertyName, final PropertyList properties) throws ValidationException {
assertFalse(input -> input.getProperties(propertyName).size() > 1, ASSERT_ONE_OR_LESS_MESSAGE, false,
properties, propertyName);
}
/**
* Ensure a property occurs at least once.
*
* @param propertyName
* the property name
* @param properties
* a list of properties to query
* @throws ValidationException
* when the specified property occurs more than once
*/
public static void assertOneOrMore(final String propertyName, final PropertyList properties) throws ValidationException {
assertFalse(input -> input.getProperties(propertyName).size() < 1, ASSERT_ONE_OR_MORE_MESSAGE, false,
properties, propertyName);
}
/**
* Ensure a property occurs once.
*
* @param propertyName
* the property name
* @param properties
* a list of properties to query
* @throws ValidationException
* when the specified property does not occur once
*/
public static void assertOne(final String propertyName, final PropertyList properties) throws ValidationException {
assertFalse(input -> input.getProperties(propertyName).size() != 1, ASSERT_ONE_MESSAGE, false,
properties, propertyName);
}
/**
* Ensure a property doesn't occur in the specified list.
* @param propertyName the name of a property
* @param properties a list of properties
* @throws ValidationException thrown when the specified property
* is found in the list of properties
*/
public static void assertNone(final String propertyName, final PropertyList properties) throws ValidationException {
assertFalse(input -> input.getProperty(propertyName) != null, ASSERT_NONE_MESSAGE, false,
properties, propertyName);
}
}