/**
    *    Copyright 2009-2015 the original author or authors.
    *
    *    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.
   */
  package org.apache.ibatis.mapping;
  
  import java.util.ArrayList;
  import java.util.Collections;
  import java.util.List;
  
  import org.apache.ibatis.cache.Cache;
  import org.apache.ibatis.executor.keygen.Jdbc3KeyGenerator;
  import org.apache.ibatis.executor.keygen.KeyGenerator;
  import org.apache.ibatis.executor.keygen.NoKeyGenerator;
  import org.apache.ibatis.logging.Log;
  import org.apache.ibatis.logging.LogFactory;
  import org.apache.ibatis.scripting.LanguageDriver;
  import org.apache.ibatis.session.Configuration;
  
  /**
   * @author Clinton Begin
   */
  public final class MappedStatement {
  
    private String resource;
    private Configuration configuration;
    private String id;
    private Integer fetchSize;
    private Integer timeout;
    private StatementType statementType;
    private ResultSetType resultSetType;
    private SqlSource sqlSource;
    private Cache cache;
    private ParameterMap parameterMap;
    private List<ResultMap> resultMaps;
    private boolean flushCacheRequired;
    private boolean useCache;
    private boolean resultOrdered;
    private SqlCommandType sqlCommandType;
    private KeyGenerator keyGenerator;
    private String[] keyProperties;
    private String[] keyColumns;
    private boolean hasNestedResultMaps;
    private String databaseId;
    private Log statementLog;
    private LanguageDriver lang;
    private String[] resultSets;
  
    MappedStatement() {
      // constructor disabled
    }
  
    public static class Builder {
      private MappedStatement mappedStatement = new MappedStatement();
  
      public Builder(Configuration configuration, String id, SqlSource sqlSource, SqlCommandType sqlCommandType) {
        mappedStatement.configuration = configuration;
        mappedStatement.id = id;
        mappedStatement.sqlSource = sqlSource;
        mappedStatement.statementType = StatementType.PREPARED;
        mappedStatement.parameterMap = new ParameterMap.Builder(configuration, "defaultParameterMap", null, new ArrayList<ParameterMapping>()).build();
        mappedStatement.resultMaps = new ArrayList<ResultMap>();
        mappedStatement.sqlCommandType = sqlCommandType;
        mappedStatement.keyGenerator = configuration.isUseGeneratedKeys() && SqlCommandType.INSERT.equals(sqlCommandType) ? new Jdbc3KeyGenerator() : new NoKeyGenerator();
        String logId = id;
        if (configuration.getLogPrefix() != null) {
          logId = configuration.getLogPrefix() + id;
        }
        mappedStatement.statementLog = LogFactory.getLog(logId);
        mappedStatement.lang = configuration.getDefaultScriptingLanuageInstance();
      }
  
      public Builder resource(String resource) {
        mappedStatement.resource = resource;
        return this;
      }
  
      public String id() {
        return mappedStatement.id;
      }
  
      public Builder parameterMap(ParameterMap parameterMap) {
        mappedStatement.parameterMap = parameterMap;
        return this;
      }
  
      public Builder resultMaps(List<ResultMap> resultMaps) {
        mappedStatement.resultMaps = resultMaps;
       for (ResultMap resultMap : resultMaps) {
         mappedStatement.hasNestedResultMaps = mappedStatement.hasNestedResultMaps || resultMap.hasNestedResultMaps();
       }
       return this;
     }
 
     public Builder fetchSize(Integer fetchSize) {
       mappedStatement.fetchSize = fetchSize;
       return this;
     }
 
     public Builder timeout(Integer timeout) {
       mappedStatement.timeout = timeout;
       return this;
     }
 
     public Builder statementType(StatementType statementType) {
       mappedStatement.statementType = statementType;
       return this;
     }
 
     public Builder resultSetType(ResultSetType resultSetType) {
       mappedStatement.resultSetType = resultSetType;
       return this;
     }
 
     public Builder cache(Cache cache) {
       mappedStatement.cache = cache;
       return this;
     }
 
     public Builder flushCacheRequired(boolean flushCacheRequired) {
       mappedStatement.flushCacheRequired = flushCacheRequired;
       return this;
     }
 
     public Builder useCache(boolean useCache) {
       mappedStatement.useCache = useCache;
       return this;
     }
 
     public Builder resultOrdered(boolean resultOrdered) {
       mappedStatement.resultOrdered = resultOrdered;
       return this;
     }
 
     public Builder keyGenerator(KeyGenerator keyGenerator) {
       mappedStatement.keyGenerator = keyGenerator;
       return this;
     }
 
     public Builder keyProperty(String keyProperty) {
       mappedStatement.keyProperties = delimitedStringtoArray(keyProperty);
       return this;
     }
 
     public Builder keyColumn(String keyColumn) {
       mappedStatement.keyColumns = delimitedStringtoArray(keyColumn);
       return this;
     }
 
     public Builder databaseId(String databaseId) {
       mappedStatement.databaseId = databaseId;
       return this;
     }
 
     public Builder lang(LanguageDriver driver) {
       mappedStatement.lang = driver;
       return this;
     }
 
     public Builder resulSets(String resultSet) {
       mappedStatement.resultSets = delimitedStringtoArray(resultSet);
       return this;
     }
     
     public MappedStatement build() {
       assert mappedStatement.configuration != null;
       assert mappedStatement.id != null;
       assert mappedStatement.sqlSource != null;
       assert mappedStatement.lang != null;
       mappedStatement.resultMaps = Collections.unmodifiableList(mappedStatement.resultMaps);
       return mappedStatement;
     }
   }
 
   public KeyGenerator getKeyGenerator() {
     return keyGenerator;
   }
 
   public SqlCommandType getSqlCommandType() {
     return sqlCommandType;
   }
 
   public String getResource() {
     return resource;
   }
 
   public Configuration getConfiguration() {
     return configuration;
   }
 
   public String getId() {
     return id;
   }
 
   public boolean hasNestedResultMaps() {
     return hasNestedResultMaps;
   }
 
   public Integer getFetchSize() {
     return fetchSize;
   }
 
   public Integer getTimeout() {
     return timeout;
   }
 
   public StatementType getStatementType() {
     return statementType;
   }
 
   public ResultSetType getResultSetType() {
     return resultSetType;
   }
 
   public SqlSource getSqlSource() {
     return sqlSource;
   }
 
   public ParameterMap getParameterMap() {
     return parameterMap;
   }
 
   public List<ResultMap> getResultMaps() {
     return resultMaps;
   }
 
   public Cache getCache() {
     return cache;
   }
 
   public boolean isFlushCacheRequired() {
     return flushCacheRequired;
   }
 
   public boolean isUseCache() {
     return useCache;
   }
 
   public boolean isResultOrdered() {
     return resultOrdered;
   }
 
   public String getDatabaseId() {
     return databaseId;
   }
 
   public String[] getKeyProperties() {
     return keyProperties;
   }
 
   public String[] getKeyColumns() {
     return keyColumns;
   }
 
   public Log getStatementLog() {
     return statementLog;
   }
 
   public LanguageDriver getLang() {
     return lang;
   }
 
   public String[] getResulSets() {
     return resultSets;
   }
   
   public BoundSql getBoundSql(Object parameterObject) {
     BoundSql boundSql = sqlSource.getBoundSql(parameterObject);
     List<ParameterMapping> parameterMappings = boundSql.getParameterMappings();
     if (parameterMappings == null || parameterMappings.isEmpty()) {
       boundSql = new BoundSql(configuration, boundSql.getSql(), parameterMap.getParameterMappings(), parameterObject);
     }
 
     // check for nested result maps in parameter mappings (issue #30)
     for (ParameterMapping pm : boundSql.getParameterMappings()) {
       String rmId = pm.getResultMapId();
       if (rmId != null) {
         ResultMap rm = configuration.getResultMap(rmId);
         if (rm != null) {
           hasNestedResultMaps |= rm.hasNestedResultMaps();
         }
       }
     }
 
     return boundSql;
   }
 
   private static String[] delimitedStringtoArray(String in) {
     if (in == null || in.trim().length() == 0) {
       return null;
     } else {
       return in.split(",");
     }
   }
 
 }