org.hibernate.validator.internal.metadata.raw.ConstrainedParameter Maven / Gradle / Ivy

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* Licensed 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
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package org.hibernate.validator.internal.metadata.raw;

import java.util.Map;
import java.util.Set;

import org.hibernate.validator.internal.metadata.core.MetaConstraint;
import org.hibernate.validator.internal.metadata.location.ExecutableConstraintLocation;

import static org.hibernate.validator.internal.util.CollectionHelper.newHashMap;
import static org.hibernate.validator.internal.util.CollectionHelper.newHashSet;

/**
 * Contains constraint-related meta-data for one method parameter.
 *
 * @author Gunnar Morling
 */
public class ConstrainedParameter extends AbstractConstrainedElement {
	private final String name;

	/**
	 * Creates a new parameter meta data object.
	 *
	 * @param source The source of meta data.
	 * @param location The location of the represented method parameter.
	 * @param name The name of the represented parameter.
	 * @param constraints The constraints of the represented method parameter, if
	 * any.
	 * @param groupConversions The group conversions of the represented method parameter, if any.
	 * @param isCascading Whether a cascaded validation of the represented method
	 * parameter shall be performed or not.
	 */
	public ConstrainedParameter(ConfigurationSource source,
								ExecutableConstraintLocation location,
								String name,
								Set> constraints,
								Map, Class> groupConversions,
								boolean isCascading) {
		super(
				source,
				ConstrainedElementKind.PARAMETER,
				location,
				constraints,
				groupConversions,
				isCascading
		);

		this.name = name;
	}

	@Override
	public ExecutableConstraintLocation getLocation() {
		return (ExecutableConstraintLocation) super.getLocation();
	}

	public String getParameterName() {
		return name;
	}

	/**
	 * Creates a new constrained parameter object by merging this and the given
	 * other parameter.
	 *
	 * @param other The parameter to merge.
	 *
	 * @return A merged parameter.
	 */
	public ConstrainedParameter merge(ConstrainedParameter other) {
		ConfigurationSource mergedSource = ConfigurationSource.max( source, other.source );

		String mergedName;

		if ( source.getPriority() > other.source.getPriority() ) {
			mergedName = name;
		}
		else {
			mergedName = other.name;
		}

		Set> mergedConstraints = newHashSet( constraints );
		mergedConstraints.addAll( other.constraints );

		Map, Class> mergedGroupConversions = newHashMap( groupConversions );
		mergedGroupConversions.putAll( other.groupConversions );

		return new ConstrainedParameter(
				mergedSource,
				getLocation(),
				mergedName,
				mergedConstraints,
				mergedGroupConversions,
				isCascading || other.isCascading
		);
	}

	@Override
	public String toString() {
		//display short annotation type names
		StringBuilder sb = new StringBuilder();

		for ( MetaConstraint oneConstraint : getConstraints() ) {
			sb.append( oneConstraint.getDescriptor().getAnnotation().annotationType().getSimpleName() );
			sb.append( ", " );
		}

		String constraintsAsString = sb.length() > 0 ? sb.substring( 0, sb.length() - 2 ) : sb.toString();

		return "ParameterMetaData [location=" + getLocation() + "], name=" + name + "], constraints=["
				+ constraintsAsString + "], isCascading=" + isCascading() + "]";
	}
}