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#[validator.isNotNull(value)]

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#[validator.isNull(value)]

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<validation:is-number value="#[value]" numberType="LONG" minValue="#[min]" maxValue="#[max]" />

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<validation:is-number value="#[value]" numberType="LONG" minValue="#[min]" maxValue="#[max]" pattern="#[pattern]" locale="US" />

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#[validator.isNumber(payload, numberType, minValue, maxValue)]

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#[validator.validateUrl(‘http://www.mulesoft.com’)]

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/**
 * A component which performs a validation and expresses
 * its result through a {@link ValidationResult} object.
 * <p/>
 * The {@link #validate(MuleEvent)} method receives a
 * {@link MuleEvent} in order to make it generic and easy to extend.
 * However, that doesn't necessarily mean that all the validation
 * is performed with or over the event exclusively. Thread
 * safeness is not to be assumed over instances of this class
 * since the validator could be stateful.

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/*
 * Copyright (c) MuleSoft, Inc.  All rights reserved.  http://www.mulesoft.com
 * The software in this package is published under the terms of the CPAL v1.0
 * license, a copy of which has been included with this distribution in the
 * LICENSE.txt file.
 */
package org.mule.extension.validation.api;

/**
 * The result of a validation

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<validation:custom-validator class="com.myproject.CustomValidator" config-ref="validator" />

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<mule>
  <spring:beans>
    <spring:bean id="customValidator" class="com.myproject.CustomValidator" />
  </spring:beans>
  
  <flow name="customValidator">
    <validation:custom-validator ref="customValidator" />
  </flow>
</mule>