Having a closer look at this commit, I actually don't like the idea that ModelResolver now supports versionRanges.
IMO the version should always be specific *before* resolving the model.
IIUC correctly this is required to supported version-ranges for managed dependencies, and that is also something I wonder if we want that.

Please let us reconsider this commit.

thanks,
Robert


On Wed, 08 Mar 2017 19:29:51 +0100, <schu...@apache.org> wrote:

Repository: maven
Updated Branches:
  refs/heads/master 114ef6c5a -> ab800b0cf


[MNG-6182] ModelResolver interface enhancements.


Project: http://git-wip-us.apache.org/repos/asf/maven/repo
Commit: http://git-wip-us.apache.org/repos/asf/maven/commit/ab800b0c
Tree: http://git-wip-us.apache.org/repos/asf/maven/tree/ab800b0c
Diff: http://git-wip-us.apache.org/repos/asf/maven/diff/ab800b0c

Branch: refs/heads/master
Commit: ab800b0cfae4e3ca9453304e3b9727ba4a4b712b
Parents: 114ef6c
Author: Christian Schulte <schu...@apache.org>
Authored: Sat Jan 30 19:17:34 2016 +0100
Committer: Christian Schulte <schu...@apache.org>
Committed: Wed Mar 8 18:24:18 2017 +0100

----------------------------------------------------------------------
 .../maven/project/ProjectModelResolver.java     | 84 +++++++++++++++----
 .../maven/model/resolution/ModelResolver.java   | 32 ++++++++
.../internal/DefaultModelResolver.java | 85 ++++++++++++++++----
 3 files changed, 167 insertions(+), 34 deletions(-)
----------------------------------------------------------------------


http://git-wip-us.apache.org/repos/asf/maven/blob/ab800b0c/maven-core/src/main/java/org/apache/maven/project/ProjectModelResolver.java
----------------------------------------------------------------------
diff --git a/maven-core/src/main/java/org/apache/maven/project/ProjectModelResolver.java b/maven-core/src/main/java/org/apache/maven/project/ProjectModelResolver.java
index 7b93217..3a31d33 100644
--- a/maven-core/src/main/java/org/apache/maven/project/ProjectModelResolver.java +++ b/maven-core/src/main/java/org/apache/maven/project/ProjectModelResolver.java
@@ -28,7 +28,7 @@ import java.util.Set;
import com.google.common.base.Predicate;
 import com.google.common.collect.Iterables;
-
+import org.apache.maven.model.Dependency;
 import org.apache.maven.model.Parent;
 import org.apache.maven.model.Repository;
 import org.apache.maven.model.building.FileModelSource;
@@ -203,24 +203,26 @@ public class ProjectModelResolver
         return new FileModelSource( pomFile );
     }
-    public ModelSource resolveModel( Parent parent )
+    @Override
+    public ModelSource resolveModel( final Parent parent )
         throws UnresolvableModelException
     {
- Artifact artifact = new DefaultArtifact( parent.getGroupId(), parent.getArtifactId(), "", "pom",
-                                                 parent.getVersion() );
-
- VersionRangeRequest versionRangeRequest = new VersionRangeRequest( artifact, repositories, context );
-        versionRangeRequest.setTrace( trace );
-
         try
         {
- VersionRangeResult versionRangeResult = resolver.resolveVersionRange( session, versionRangeRequest ); + final Artifact artifact = new DefaultArtifact( parent.getGroupId(), parent.getArtifactId(), "", "pom", + parent.getVersion() );
+
+ final VersionRangeRequest versionRangeRequest = new VersionRangeRequest( artifact, repositories, context );
+            versionRangeRequest.setTrace( trace );
+
+ final VersionRangeResult versionRangeResult = resolver.resolveVersionRange( session, versionRangeRequest );
            if ( versionRangeResult.getHighestVersion() == null )
             {
- throw new UnresolvableModelException( "No versions matched the requested range '" + parent.getVersion() - + "'", parent.getGroupId(), parent.getArtifactId(), - parent.getVersion() );
+                throw new UnresolvableModelException(
+ String.format( "No versions matched the requested parent version range '%s'",
+                                   parent.getVersion() ),
+ parent.getGroupId(), parent.getArtifactId(), parent.getVersion() );
            }
@@ -229,21 +231,69 @@ public class ProjectModelResolver
&& versionRangeResult.getVersionConstraint().getRange().getUpperBound() == null )
             {
                 // Message below is checked for in the MNG-2199 core IT.
- throw new UnresolvableModelException( "The requested version range '" + parent.getVersion() - + "' does not specify an upper bound", parent.getGroupId(), - parent.getArtifactId(), parent.getVersion() );
+                throw new UnresolvableModelException(
+ String.format( "The requested parent version range '%s' does not specify an upper bound",
+                                   parent.getVersion() ),
+ parent.getGroupId(), parent.getArtifactId(), parent.getVersion() );
            }
parent.setVersion( versionRangeResult.getHighestVersion().toString() );
+
+ return resolveModel( parent.getGroupId(), parent.getArtifactId(), parent.getVersion() );
         }
-        catch ( VersionRangeResolutionException e )
+        catch ( final VersionRangeResolutionException e )
         {
throw new UnresolvableModelException( e.getMessage(), parent.getGroupId(), parent.getArtifactId(), parent.getVersion(), e );
        }
+    }
- return resolveModel( parent.getGroupId(), parent.getArtifactId(), parent.getVersion() );
+    @Override
+    public ModelSource resolveModel( final Dependency dependency )
+        throws UnresolvableModelException
+    {
+        try
+        {
+ final Artifact artifact = new DefaultArtifact( dependency.getGroupId(), dependency.getArtifactId(), "", + "pom", dependency.getVersion() );
+
+ final VersionRangeRequest versionRangeRequest = new VersionRangeRequest( artifact, repositories, context );
+            versionRangeRequest.setTrace( trace );
+
+ final VersionRangeResult versionRangeResult = resolver.resolveVersionRange( session, versionRangeRequest );
+
+            if ( versionRangeResult.getHighestVersion() == null )
+            {
+                throw new UnresolvableModelException(
+ String.format( "No versions matched the requested dependency version range '%s'",
+                                   dependency.getVersion() ),
+ dependency.getGroupId(), dependency.getArtifactId(), dependency.getVersion() );
+
+            }
+
+            if ( versionRangeResult.getVersionConstraint() != null
+ && versionRangeResult.getVersionConstraint().getRange() != null + && versionRangeResult.getVersionConstraint().getRange().getUpperBound() == null )
+            {
+                // Message below is checked for in the MNG-4463 core IT.
+                throw new UnresolvableModelException(
+ String.format( "The requested dependency version range '%s' does not specify an upper bound",
+                                   dependency.getVersion() ),
+ dependency.getGroupId(), dependency.getArtifactId(), dependency.getVersion() );
+
+            }
+
+ dependency.setVersion( versionRangeResult.getHighestVersion().toString() );
+
+ return resolveModel( dependency.getGroupId(), dependency.getArtifactId(), dependency.getVersion() );
+        }
+        catch ( VersionRangeResolutionException e )
+        {
+ throw new UnresolvableModelException( e.getMessage(), dependency.getGroupId(), dependency.getArtifactId(), + dependency.getVersion(), e );
+
+        }
     }
 }

http://git-wip-us.apache.org/repos/asf/maven/blob/ab800b0c/maven-model-builder/src/main/java/org/apache/maven/model/resolution/ModelResolver.java
----------------------------------------------------------------------
diff --git a/maven-model-builder/src/main/java/org/apache/maven/model/resolution/ModelResolver.java b/maven-model-builder/src/main/java/org/apache/maven/model/resolution/ModelResolver.java
index c81a536..39695f7 100644
--- a/maven-model-builder/src/main/java/org/apache/maven/model/resolution/ModelResolver.java +++ b/maven-model-builder/src/main/java/org/apache/maven/model/resolution/ModelResolver.java
@@ -19,6 +19,7 @@ package org.apache.maven.model.resolution;
  * under the License.
  */
+import org.apache.maven.model.Dependency;
 import org.apache.maven.model.Parent;
 import org.apache.maven.model.Repository;
 import org.apache.maven.model.building.ModelSource;
@@ -47,16 +48,47 @@ public interface ModelResolver
    /**
* Tries to resolve the POM for the specified parent coordinates possibly updating {@code parent}.
+     * <p>
+ * Unlike the {@link #resolveModel(java.lang.String, java.lang.String, java.lang.String)} method, this method + * supports version ranges and updates the given {@code parent} instance to match the returned {@code ModelSource}. + * If {@code parent} declares a version range, the version corresponding to the returned {@code ModelSource} will
+     * be set on the given {@code parent}.
+     * </p>
      *
* @param parent The parent coordinates to resolve, must not be {@code null}.
+     *
      * @return The source of the requested POM, never {@code null}.
+     *
* @throws UnresolvableModelException If the POM could not be resolved from any configured repository.
      * @since 3.2.2
+     *
+     * @see Parent#clone()
      */
     ModelSource resolveModel( Parent parent )
         throws UnresolvableModelException;
    /**
+ * Tries to resolve the POM for the specified dependency coordinates possibly updating {@code dependency}.
+     * <p>
+ * Unlike the {@link #resolveModel(java.lang.String, java.lang.String, java.lang.String)} method, this method + * supports version ranges and updates the given {@code dependency} instance to match the returned + * {@code ModelSource}. If {@code dependency} declares a version range, the version corresponding to the returned
+     * {@code ModelSource} will be set on the given {@code dependency}.
+     * </p>
+     *
+ * @param dependency The dependency coordinates to resolve, must not be {@code null}.
+     *
+     * @return The source of the requested POM, never {@code null}.
+     *
+ * @throws UnresolvableModelException If the POM could not be resolved from any configured repository.
+     * @since 3.5.0-alpha-2
+     *
+     * @see Dependency#clone()
+     */
+    ModelSource resolveModel( Dependency dependency )
+        throws UnresolvableModelException;
+
+    /**
* Adds a repository to use for subsequent resolution requests. The order in which repositories are added matters, * repositories that were added first should also be searched first. When multiple repositories with the same * identifier are added, only the first repository being added will be used.

http://git-wip-us.apache.org/repos/asf/maven/blob/ab800b0c/maven-resolver-provider/src/main/java/org/apache/maven/repository/internal/DefaultModelResolver.java
----------------------------------------------------------------------
diff --git a/maven-resolver-provider/src/main/java/org/apache/maven/repository/internal/DefaultModelResolver.java b/maven-resolver-provider/src/main/java/org/apache/maven/repository/internal/DefaultModelResolver.java
index 9ea91ff..3e82eb9 100644
--- a/maven-resolver-provider/src/main/java/org/apache/maven/repository/internal/DefaultModelResolver.java +++ b/maven-resolver-provider/src/main/java/org/apache/maven/repository/internal/DefaultModelResolver.java
@@ -28,6 +28,7 @@ import java.util.Set;
import com.google.common.base.Predicate;
 import com.google.common.collect.Iterables;
+import org.apache.maven.model.Dependency;
 import org.apache.maven.model.Parent;
 import org.apache.maven.model.Repository;
 import org.apache.maven.model.building.FileModelSource;
@@ -182,25 +183,27 @@ class DefaultModelResolver
         return new FileModelSource( pomFile );
     }
-    public ModelSource resolveModel( Parent parent )
+    @Override
+    public ModelSource resolveModel( final Parent parent )
         throws UnresolvableModelException
     {
- Artifact artifact = new DefaultArtifact( parent.getGroupId(), parent.getArtifactId(), "", "pom",
-                                                 parent.getVersion() );
-
- VersionRangeRequest versionRangeRequest = new VersionRangeRequest( artifact, repositories, context );
-        versionRangeRequest.setTrace( trace );
-
         try
         {
-            VersionRangeResult versionRangeResult =
+ final Artifact artifact = new DefaultArtifact( parent.getGroupId(), parent.getArtifactId(), "", "pom", + parent.getVersion() );
+
+ final VersionRangeRequest versionRangeRequest = new VersionRangeRequest( artifact, repositories, context );
+            versionRangeRequest.setTrace( trace );
+
+            final VersionRangeResult versionRangeResult =
versionRangeResolver.resolveVersionRange( session, versionRangeRequest );
            if ( versionRangeResult.getHighestVersion() == null )
             {
- throw new UnresolvableModelException( "No versions matched the requested range '" + parent.getVersion() - + "'", parent.getGroupId(), parent.getArtifactId(), - parent.getVersion() );
+                throw new UnresolvableModelException(
+ String.format( "No versions matched the requested parent version range '%s'",
+                                   parent.getVersion() ),
+ parent.getGroupId(), parent.getArtifactId(), parent.getVersion() );
            }
@@ -209,22 +212,70 @@ class DefaultModelResolver
&& versionRangeResult.getVersionConstraint().getRange().getUpperBound() == null )
             {
                 // Message below is checked for in the MNG-2199 core IT.
- throw new UnresolvableModelException( "The requested version range '" + parent.getVersion() - + "' does not specify an upper bound", parent.getGroupId(), - parent.getArtifactId(), parent.getVersion() );
+                throw new UnresolvableModelException(
+ String.format( "The requested parent version range '%s' does not specify an upper bound",
+                                   parent.getVersion() ),
+ parent.getGroupId(), parent.getArtifactId(), parent.getVersion() );
            }
parent.setVersion( versionRangeResult.getHighestVersion().toString() );
+
+ return resolveModel( parent.getGroupId(), parent.getArtifactId(), parent.getVersion() );
         }
-        catch ( VersionRangeResolutionException e )
+        catch ( final VersionRangeResolutionException e )
         {
throw new UnresolvableModelException( e.getMessage(), parent.getGroupId(), parent.getArtifactId(), parent.getVersion(), e );
        }
-
- return resolveModel( parent.getGroupId(), parent.getArtifactId(), parent.getVersion() );
     }
+    @Override
+    public ModelSource resolveModel( final Dependency dependency )
+        throws UnresolvableModelException
+    {
+        try
+        {
+ final Artifact artifact = new DefaultArtifact( dependency.getGroupId(), dependency.getArtifactId(), "", + "pom", dependency.getVersion() );
+
+ final VersionRangeRequest versionRangeRequest = new VersionRangeRequest( artifact, repositories, context );
+            versionRangeRequest.setTrace( trace );
+
+            final VersionRangeResult versionRangeResult =
+ versionRangeResolver.resolveVersionRange( session, versionRangeRequest );
+
+            if ( versionRangeResult.getHighestVersion() == null )
+            {
+                throw new UnresolvableModelException(
+ String.format( "No versions matched the requested dependency version range '%s'",
+                                   dependency.getVersion() ),
+ dependency.getGroupId(), dependency.getArtifactId(), dependency.getVersion() );
+
+            }
+
+            if ( versionRangeResult.getVersionConstraint() != null
+ && versionRangeResult.getVersionConstraint().getRange() != null + && versionRangeResult.getVersionConstraint().getRange().getUpperBound() == null )
+            {
+                // Message below is checked for in the MNG-4463 core IT.
+                throw new UnresolvableModelException(
+ String.format( "The requested dependency version range '%s' does not specify an upper bound",
+                                   dependency.getVersion() ),
+ dependency.getGroupId(), dependency.getArtifactId(), dependency.getVersion() );
+
+            }
+
+ dependency.setVersion( versionRangeResult.getHighestVersion().toString() );
+
+ return resolveModel( dependency.getGroupId(), dependency.getArtifactId(), dependency.getVersion() );
+        }
+        catch ( VersionRangeResolutionException e )
+        {
+ throw new UnresolvableModelException( e.getMessage(), dependency.getGroupId(), dependency.getArtifactId(), + dependency.getVersion(), e );
+
+        }
+    }
 }

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