package org.eclipse.aether.version;

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 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
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 * 
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A constraint on versions for a dependency. A constraint can either consist of a version range (e.g. "[1, ]") or a
single version (e.g. "1.1"). In the first case, the constraint expresses a hard requirement on a version matching the
range. In the second case, the constraint expresses a soft requirement on a specific version (i.e. a recommendation).
/**
 * A constraint on versions for a dependency. A constraint can either consist of a version range (e.g. "[1, ]") or a
 * single version (e.g. "1.1"). In the first case, the constraint expresses a hard requirement on a version matching the
 * range. In the second case, the constraint expresses a soft requirement on a specific version (i.e. a recommendation).
 */
public interface VersionConstraint
{

    
Gets the version range of this constraint.
Returns:
The version range or null if none./**
     * Gets the version range of this constraint.
     * 
     * @return The version range or {@code null} if none.
     */
    VersionRange getRange();

    
Gets the version recommended by this constraint.
Returns:
The recommended version or null if none./**
     * Gets the version recommended by this constraint.
     * 
     * @return The recommended version or {@code null} if none.
     */
    Version getVersion();

    
Determines whether the specified version satisfies this constraint. In more detail, a version satisfies this
constraint if it matches its version range or if this constraint has no version range and the specified version
equals the version recommended by the constraint.
Params:
version – The version to test, must not be null.
Returns:
true if the specified version satisfies this constraint, false otherwise./**
     * Determines whether the specified version satisfies this constraint. In more detail, a version satisfies this
     * constraint if it matches its version range or if this constraint has no version range and the specified version
     * equals the version recommended by the constraint.
     * 
     * @param version The version to test, must not be {@code null}.
     * @return {@code true} if the specified version satisfies this constraint, {@code false} otherwise.
     */
    boolean containsVersion( Version version );

}