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Diffstat (limited to 'framework/src/maven/apache-maven-3.3.3/maven-core/src/main/java/org/apache/maven/toolchain/merge/MavenToolchainMerger.java')
| -rw-r--r-- | framework/src/maven/apache-maven-3.3.3/maven-core/src/main/java/org/apache/maven/toolchain/merge/MavenToolchainMerger.java | 103 |
1 files changed, 103 insertions, 0 deletions
diff --git a/framework/src/maven/apache-maven-3.3.3/maven-core/src/main/java/org/apache/maven/toolchain/merge/MavenToolchainMerger.java b/framework/src/maven/apache-maven-3.3.3/maven-core/src/main/java/org/apache/maven/toolchain/merge/MavenToolchainMerger.java new file mode 100644 index 00000000..538f79b3 --- /dev/null +++ b/framework/src/maven/apache-maven-3.3.3/maven-core/src/main/java/org/apache/maven/toolchain/merge/MavenToolchainMerger.java @@ -0,0 +1,103 @@ +package org.apache.maven.toolchain.merge; + +/* + * Licensed to the Apache Software Foundation (ASF) under one + * or more contributor license agreements. See the NOTICE file + * distributed with this work for additional information + * regarding copyright ownership. The ASF licenses this file + * to you 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. + */ + +import java.util.LinkedHashMap; +import java.util.List; +import java.util.Map; + +import org.apache.maven.toolchain.model.PersistedToolchains; +import org.apache.maven.toolchain.model.ToolchainModel; +import org.codehaus.plexus.util.xml.Xpp3Dom; + +/** + * + * @author Robert Scholte + * @since 3.2.4 + */ +public class MavenToolchainMerger +{ + + public void merge( PersistedToolchains dominant, PersistedToolchains recessive, String recessiveSourceLevel ) + { + if ( dominant == null || recessive == null ) + { + return; + } + + recessive.setSourceLevel( recessiveSourceLevel ); + + shallowMerge( dominant.getToolchains(), recessive.getToolchains(), recessiveSourceLevel ); + } + + private void shallowMerge( List<ToolchainModel> dominant, List<ToolchainModel> recessive, + String recessiveSourceLevel ) + { + Map<Object, ToolchainModel> merged = new LinkedHashMap<Object, ToolchainModel>(); + + for ( ToolchainModel dominantModel : dominant ) + { + Object key = getToolchainModelKey( dominantModel ); + + merged.put( key, dominantModel ); + } + + for ( ToolchainModel recessiveModel : recessive ) + { + Object key = getToolchainModelKey( recessiveModel ); + + ToolchainModel dominantModel = merged.get( key ); + if ( dominantModel == null ) + { + recessiveModel.setSourceLevel( recessiveSourceLevel ); + dominant.add( recessiveModel ); + } + else + { + mergeToolchainModel_Configuration( dominantModel, recessiveModel ); + } + } + } + + protected void mergeToolchainModel_Configuration( ToolchainModel target, + ToolchainModel source ) + { + Xpp3Dom src = (Xpp3Dom) source.getConfiguration(); + if ( src != null ) + { + Xpp3Dom tgt = (Xpp3Dom) target.getConfiguration(); + if ( tgt == null ) + { + tgt = Xpp3Dom.mergeXpp3Dom( new Xpp3Dom( src ), tgt ); + } + else + { + tgt = Xpp3Dom.mergeXpp3Dom( tgt, src ); + } + target.setConfiguration( tgt ); + } + } + + protected Object getToolchainModelKey( ToolchainModel model ) + { + return model; + } + +}
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