/*
 * 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.shardingsphere.core.strategy.encrypt;

import com.google.common.base.Optional;
import org.apache.shardingsphere.spi.encrypt.ShardingEncryptor;

import java.util.LinkedHashMap;
import java.util.Map;
import java.util.Map.Entry;

/**
 * Sharding encryptor engine.
 *
 * @author panjuan
 */
public final class ShardingEncryptorEngine {
    
    private final Map<String, ShardingEncryptorStrategy> shardingEncryptorStrategies = new LinkedHashMap<>();
    
    public ShardingEncryptorEngine(final Map<String, ShardingEncryptorStrategy> shardingEncryptorStrategies) {
        for (Entry<String, ShardingEncryptorStrategy> entry : shardingEncryptorStrategies.entrySet()) {
            if (null != entry.getValue()) {
                this.shardingEncryptorStrategies.put(entry.getKey(), entry.getValue());
            }
        }
    }
    
    public ShardingEncryptorEngine(final Map<String, ShardingEncryptorStrategy> shardingEncryptorStrategies, final ShardingEncryptorStrategy defaultEncryptorStrategy) {
        for (Entry<String, ShardingEncryptorStrategy> entry : shardingEncryptorStrategies.entrySet()) {
            if (null != entry.getValue()) {
                this.shardingEncryptorStrategies.put(entry.getKey(), entry.getValue());
            } else {
                this.shardingEncryptorStrategies.put(entry.getKey(), defaultEncryptorStrategy);
            }
        }
    }
    
    /**
     * Get sharding encryptor.
     * 
     * @param logicTableName logic table name
     * @param columnName column name
     * @return optional of sharding encryptor
     */
    public Optional<ShardingEncryptor> getShardingEncryptor(final String logicTableName, final String columnName) {
        if (shardingEncryptorStrategies.keySet().contains(logicTableName) && shardingEncryptorStrategies.get(logicTableName).getColumns().contains(columnName)) {
            return Optional.of(shardingEncryptorStrategies.get(logicTableName).getShardingEncryptor());
        }
        return Optional.absent();
    }
    
    /**
     * Is has sharding encryptor strategy or not.
     * 
     * @param logicTableName logic table name
     * @return sharding encryptor strategy or not
     */
    public boolean isHasShardingEncryptorStrategy(final String logicTableName) {
        return shardingEncryptorStrategies.keySet().contains(logicTableName);
    }
    
    /**
     * Get assisted query column.
     * 
     * @param logicTableName logic table name
     * @param columnName column name
     * @return assisted query column
     */
    public Optional<String> getAssistedQueryColumn(final String logicTableName, final String columnName) {
        return shardingEncryptorStrategies.get(logicTableName).getAssistedQueryColumn(columnName);
    }
}

@@ -957,16 +957,93 @@
 cryptor;
+%0Aimport org.apache.shardingsphere.spi.encrypt.ShardingQueryAssistedEncryptor;
 %0A%0Aimport
@@ -2927,32 +2927,47 @@
 Is has sharding 
+query assisted 
 encryptor strate
@@ -2955,33 +2955,24 @@
 ed encryptor
- strategy
  or not.%0A   
@@ -3033,24 +3033,28 @@
   * @return 
+has 
 sharding enc
@@ -3042,32 +3042,47 @@
 rn has sharding 
+query assisted 
 encryptor strate
@@ -3079,17 +3079,8 @@
 tor 
-strategy 
 or n
@@ -3114,32 +3114,45 @@
 an isHasSharding
+QueryAssisted
 EncryptorStrateg
@@ -3144,24 +3144,16 @@
 ncryptor
-Strategy
 (final S
@@ -3248,24 +3248,140 @@
 icTableName)
+ && shardingEncryptorStrategies.get(logicTableName).getShardingEncryptor() instanceof ShardingQueryAssistedEncryptor
 ;%0A    %7D%0A    

add isHasShardingQueryAssistedEncryptor()