/*
 * 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.
 */
package org.apache.jackrabbit.oak.spi.commit;

import org.apache.jackrabbit.oak.spi.state.NodeState;

import java.util.ArrayList;
import java.util.Arrays;
import java.util.Collection;
import java.util.List;

import javax.annotation.Nonnull;

/**
 * This {@code ValidatorProvider} aggregates a list of validator providers into
 * a single validator provider.
 */
public class CompositeValidatorProvider implements ValidatorProvider {

    public static ValidatorProvider compose(
            @Nonnull Collection<ValidatorProvider> providers) {
        switch (providers.size()) {
        case 0:
            return DefaultValidatorProvider.INSTANCE;
        case 1:
            return providers.iterator().next();
        default:
            return new CompositeValidatorProvider(providers);
        }
    }

    private final Collection<ValidatorProvider> providers;

    private CompositeValidatorProvider(Collection<ValidatorProvider> providers) {
        this.providers = providers;
    }

    public CompositeValidatorProvider(ValidatorProvider... providers) {
        this(Arrays.asList(providers));
    }

    @Override
    public Validator getRootValidator(NodeState before, NodeState after) {
        List<Validator> rootValidators = new ArrayList<Validator>(providers.size());

        for (ValidatorProvider provider : providers) {
            rootValidators.add(provider.getRootValidator(before, after));
        }

        return new CompositeValidator(rootValidators);
    }

}

@@ -846,63 +846,8 @@
 t;%0A%0A
-import org.apache.jackrabbit.oak.spi.state.NodeState;%0A%0A
 impo
@@ -947,17 +947,16 @@
 l.List;%0A
-%0A
 import j
@@ -981,16 +981,71 @@
 nnull;%0A%0A
+import org.apache.jackrabbit.oak.spi.state.NodeState;%0A%0A
 /**%0A * T
@@ -1272,29 +1272,16 @@
 compose(
-%0A            
 @Nonnull
@@ -1364,24 +1364,28 @@
 ) %7B%0A        
+    
 case 0:%0A    
@@ -1388,24 +1388,28 @@
             
+  
+  
 return Defau
@@ -1442,24 +1442,28 @@
 CE;%0A        
+    
 case 1:%0A    
@@ -1466,24 +1466,28 @@
             
+   
+ 
 return provi
@@ -1518,16 +1518,20 @@
         
+    
 default:
@@ -1531,16 +1531,20 @@
 efault:%0A
+    
         

fix indention