/**
*
*/
package cn.org.zeronote.orm.dao.parser;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import cn.org.zeronote.orm.ORMAutoAssemble;
import cn.org.zeronote.orm.ORMHash;
import cn.org.zeronote.orm.ORMTable;
/**
* Orm sql语句生成
* <p>针对表散列进行特殊处理，要生成多条sql</p>
* @author <a href='mailto:lizheng8318@gmail.com'>lizheng</a>
*
*/
public class SqlSelHashGenerator extends SqlSelGenerator implements Generator{
private List<String> sqls;
private List<Object[]> argsObjs;
/**
*
*/
public SqlSelHashGenerator() {
}
/**
*
* @param pojoClazz
* @param args
*/
public SqlSelHashGenerator(Class<?> pojoClazz, String[] requireFields, Map<String, Object[]> args) {
super(pojoClazz, requireFields, args);
}
/**
* 生成SQL
* @return
* @throws IllegalAccessException
*/
protected void generateParam() throws IllegalAccessException {
ORMAutoAssemble ormaa = pojoClazz.getAnnotation(ORMAutoAssemble.class);
if (ormaa == null) {
throw new IllegalAccessException("It not a ORMAutoAssemble Class!");
}
ORMTable ormTable = pojoClazz.getAnnotation(ORMTable.class);
if (ormTable == null) {
throw new IllegalAccessException("It not a ORMTable Class!");
}
ORMHash ormHashTable = pojoClazz.getAnnotation(ORMHash.class);
String refCol = ormHashTable.hashRefColumn();
Map<String, Map<String, List<Object>>> tableArgsMap = new HashMap<String, Map<String,List<Object>>>();
// 装填 散列列
for (String colKey : argsMap.keySet()) {
if (colKey.equals(refCol)) {
// 参照列拆分
Object[] args = argsMap.get(colKey);
for (Object colValue : args) {
String tableName = DBUtils.getInstance().findHashTableName(ormHashTable, ormTable, Long.valueOf(String.valueOf(colValue)));
if (tableArgsMap.get(tableName) == null) {
Map<String, List<Object>> m = new HashMap<String, List<Object>>();
List<Object> l = new ArrayList<Object>();
l.add(colValue);
m.put(colKey, l);
tableArgsMap.put(tableName, m);
} else {
tableArgsMap.get(tableName).get(colKey).add(colValue);
}
}
break;
}
}
// 装填其它参数
for (String colKey : argsMap.keySet()) {
if (colKey.equals(refCol)) {
// 这个参数已经拆分完毕
continue;
}
for (Map<String, List<Object>> map : tableArgsMap.values()) {
map.put(colKey, Arrays.asList(argsMap.get(colKey)));
}
}
String[] orders = ormTable.order();
this.sqls = new ArrayList<String>();
this.argsObjs = new ArrayList<Object[]>();
for (String tableName : tableArgsMap.keySet()) {
List<Object> params = new ArrayList<Object>();
Map<String, List<Object>> args = tableArgsMap.get(tableName);
Map<String, Object[]> rArgs = new HashMap<String, Object[]>();
for (String arg : args.keySet()) {
rArgs.put(arg, args.get(arg).toArray());
}
this.sqls.add(genSql(params, tableName, rArgs, orders));
// params
this.argsObjs.add(params.toArray());
}
this.sql = this.sqls.get(0);
this.args = this.argsObjs.get(0);
}
/**
* 相关参数
* @return
* @throws IllegalAccessException
*/
public List<Object[]> getArgsObjs() throws IllegalAccessException {
if (argsObjs == null) {
generateParam();
}
return argsObjs;
}
/**
* Sql语句
* @return the sql
* @throws IllegalAccessException
*/
public String[] getSqls() throws IllegalAccessException {
if (sqls == null) {
generateParam();
}
return sqls.toArray(new String[0]);
}
}