/*
 * Copyright 2016-2018 shardingsphere.io.
 * <p>
 * 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.
 * </p>
 */

package io.shardingsphere.orchestration.internal.registry.config.listener;

import io.shardingsphere.orchestration.internal.registry.config.event.ConfigMapChangedEvent;
import io.shardingsphere.orchestration.internal.registry.config.node.ConfigurationNode;
import io.shardingsphere.orchestration.internal.registry.listener.PostShardingOrchestrationEventListener;
import io.shardingsphere.orchestration.reg.api.RegistryCenter;
import io.shardingsphere.orchestration.reg.listener.DataChangedEvent;
import io.shardingsphere.orchestration.reg.listener.DataChangedEvent.ChangedType;

import java.util.Collection;
import java.util.Collections;
import java.util.LinkedList;

/**
 * Schema changed listener.
 *
 * @author panjuan
 */
public final class SchemaChangedListener extends PostShardingOrchestrationEventListener {
    
    private final Collection<String> currentSchemas = new LinkedList<>();
    
    private final Collection<String> tmpSchemas = new LinkedList<>();
    
    public SchemaChangedListener(final String name, final RegistryCenter regCenter) {
        super(regCenter, new ConfigurationNode(name).getSchemaPath());
    }
    
    @Override
    protected ConfigMapChangedEvent createShardingOrchestrationEvent(final DataChangedEvent event) {
        System.out.println(event.getKey());
        System.out.println(event.getValue());
        if (ChangedType.DELETED == event.getChangedType()) {
            event.getKey();
        }
        return new ConfigMapChangedEvent(Collections.EMPTY_MAP);
    }
}

@@ -774,32 +774,126 @@
 apChangedEvent;%0A
+import io.shardingsphere.orchestration.internal.registry.config.event.DataSourceChangedEvent;%0A
 import io.shardi
@@ -1066,24 +1066,118 @@
 ntListener;%0A
+import io.shardingsphere.orchestration.internal.registry.listener.ShardingOrchestrationEvent;%0A
 import io.sh
@@ -1378,16 +1378,88 @@
 gedType;
+%0Aimport io.shardingsphere.orchestration.yaml.ConfigurationYamlConverter;
 %0A%0Aimport
@@ -1690,24 +1690,84 @@
 ener %7B%0A    %0A
+    private final ConfigurationNode configurationNode;%0A    %0A
     private 
@@ -1795,15 +1795,15 @@
 ng%3E 
-current
+existed
 Sche
@@ -2061,24 +2061,81 @@
 emaPath());%0A
+        configurationNode = new ConfigurationNode(name);%0A
     %7D%0A    %0A 
@@ -2161,32 +2161,37 @@
 otected 
-ConfigMapChanged
+ShardingOrchestration
 Event cr
@@ -2265,251 +2265,940 @@
     
-System.out.println(event.getKey());%0A        System.out.println(event.getValue());%0A        if (ChangedType.DELETED == event.getChangedType()) %7B%0A            event.getKey();%0A        %7D%0A        return new ConfigMapChangedEvent(Collections.EMPTY_MAP
+if (ChangedType.UPDATED == event.getChangedType()) %7B%0A            String schemaName = configurationNode.getSchemaName(event.getKey());%0A            if (existedSchemas.contains(schemaName)) %7B%0A                if (event.getKey().equals(configurationNode.getDataSourcePath(schemaName))) %7B%0A                    return createDataSourceChangedEvent(schemaName, event);%0A                %7D%0A            %7D%0A        %7D%0A        %0A        %0A        System.out.println(event.getKey());%0A        System.out.println(event.getValue());%0A        if (ChangedType.DELETED == event.getChangedType()) %7B%0A            event.getKey();%0A        %7D%0A        return new ConfigMapChangedEvent(Collections.EMPTY_MAP);%0A    %7D%0A    %0A    private DataSourceChangedEvent createDataSourceChangedEvent(final String schemaName, final DataChangedEvent event) %7B%0A        return new DataSourceChangedEvent(schemaName, ConfigurationYamlConverter.loadDataSourceConfigurations(event.getValue())
 );%0A 

add createDataSourceChangedEvent()