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/project/ReactorModelCache.java b/framework/src/maven/apache-maven-3.3.3/maven-core/src/main/java/org/apache/maven/project/ReactorModelCache.java
new file mode 100644
index 00000000..24425da1
--- /dev/null
+++ b/framework/src/maven/apache-maven-3.3.3/maven-core/src/main/java/org/apache/maven/project/ReactorModelCache.java
@@ -0,0 +1,103 @@
+package org.apache.maven.project;
+
+/*
+ * 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.HashMap;
+import java.util.Map;
+
+import org.apache.maven.model.building.ModelCache;
+
+/**
+ * A simple model cache used to accelerate model building during a reactor build.
+ *
+ * @author Benjamin Bentmann
+ */
+class ReactorModelCache
+    implements ModelCache
+{
+
+    private final Map<CacheKey, Object> models = new HashMap<CacheKey, Object>( 256 );
+
+    public Object get( String groupId, String artifactId, String version, String tag )
+    {
+        return models.get( new CacheKey( groupId, artifactId, version, tag ) );
+    }
+
+    public void put( String groupId, String artifactId, String version, String tag, Object data )
+    {
+        models.put( new CacheKey( groupId, artifactId, version, tag ), data );
+    }
+
+    private static final class CacheKey
+    {
+
+        private final String groupId;
+
+        private final String artifactId;
+
+        private final String version;
+
+        private final String tag;
+
+        private final int hashCode;
+
+        public CacheKey( String groupId, String artifactId, String version, String tag )
+        {
+            this.groupId = ( groupId != null ) ? groupId : "";
+            this.artifactId = ( artifactId != null ) ? artifactId : "";
+            this.version = ( version != null ) ? version : "";
+            this.tag = ( tag != null ) ? tag : "";
+
+            int hash = 17;
+            hash = hash * 31 + this.groupId.hashCode();
+            hash = hash * 31 + this.artifactId.hashCode();
+            hash = hash * 31 + this.version.hashCode();
+            hash = hash * 31 + this.tag.hashCode();
+            hashCode = hash;
+        }
+
+        @Override
+        public boolean equals( Object obj )
+        {
+            if ( this == obj )
+            {
+                return true;
+            }
+
+            if ( !( obj instanceof CacheKey ) )
+            {
+                return false;
+            }
+
+            CacheKey that = (CacheKey) obj;
+
+            return artifactId.equals( that.artifactId ) && groupId.equals( that.groupId )
+                && version.equals( that.version ) && tag.equals( that.tag );
+        }
+
+        @Override
+        public int hashCode()
+        {
+            return hashCode;
+        }
+
+    }
+
+}