org.basepom.mojo.dvc.strategy.DefaultVersionStrategy Maven / Gradle / Ivy

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The dependency-versions-check plugin verifies that all resolved versions of artifacts are at least the versions specified by the project dependencies. The Maven dependency resolution process will substitute versions for the different artifacts in a dependency tree and sometimes chooses incompatible versions which leads to difficult to detect problems. This plugin resolves all dependencies and collects any requested version. It evaluates whether the resolved versions are compatible to the requested versions and reports possible conflicts.

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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
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package org.basepom.mojo.dvc.strategy;

import javax.inject.Named;
import javax.inject.Singleton;

import org.apache.maven.artifact.versioning.ComparableVersion;

/**
 * This is the default versioning strategy used by previous versions of the plugin. It assumes that all smaller versions are compatible when replaced with
 * larger numbers and compares version elements from left to right. E.g. 3.2.1 > 3.2 and 2.1.1 > 1.0. Usually works pretty ok.
 */
@Named("default")
@Singleton
public class DefaultVersionStrategy
        implements Strategy {

    @Override
    public String getName() {
        return "default";
    }

    @Override
    public final boolean isCompatible(final ComparableVersion expectedVersion, final ComparableVersion resolvedVersion) {
        // this is the same as converting the versions to the DefaultArtifactVersion and then do compareTo, as this
        // uses ComparableVersion under the hood.
        return resolvedVersion.compareTo(expectedVersion) >= 0;
    }
}