private void doPreparedStatement(
PreparedStatement ps, DbDialect dbDialect, LobCreator lobCreator, EventData data)
throws SQLException {
EventType type = data.getEventType();
// 注意insert/update语句对应的字段数序都是将主键排在后面
List<EventColumn> columns = new ArrayList<EventColumn>();
if (type.isInsert()) {
columns.addAll(data.getColumns()); // insert为所有字段
columns.addAll(data.getKeys());
} else if (type.isDelete()) {
columns.addAll(data.getKeys());
} else if (type.isUpdate()) {
boolean existOldKeys = !CollectionUtils.isEmpty(data.getOldKeys());
columns.addAll(data.getUpdatedColumns()); // 只更新带有isUpdate=true的字段
columns.addAll(data.getKeys());
if (existOldKeys) {
columns.addAll(data.getOldKeys());
}
}
for (int i = 0; i < columns.size(); i++) {
int paramIndex = i + 1;
EventColumn column = columns.get(i);
int sqlType = column.getColumnType();
// 获取一下当前字段名的数据是否必填
Table table = dbDialect.findTable(data.getSchemaName(), data.getTableName());
Map<String, Boolean> isRequiredMap = new HashMap<String, Boolean>();
for (Column tableColumn : table.getColumns()) {
isRequiredMap.put(StringUtils.lowerCase(tableColumn.getName()), tableColumn.isRequired());
}
Boolean isRequired = isRequiredMap.get(StringUtils.lowerCase(column.getColumnName()));
if (isRequired == null) {
throw new ClaveException(
String.format(
"column name %s is not found in Table[%s]",
column.getColumnName(), table.toString()));
}
Object param =
SqlUtils.stringToSqlValue(
column.getColumnValue(), sqlType, isRequired, dbDialect.isEmptyStringNulled());
try {
switch (sqlType) {
case Types.CLOB:
lobCreator.setClobAsString(ps, paramIndex, (String) param);
break;
case Types.BLOB:
lobCreator.setBlobAsBytes(ps, paramIndex, (byte[]) param);
break;
default:
StatementCreatorUtils.setParameterValue(ps, paramIndex, sqlType, null, param);
break;
}
} catch (SQLException ex) {
logger.error(
"## SetParam error , [table={}, sqltype={}, value={}]",
new Object[] {data.getSchemaName() + "." + data.getTableName(), sqlType, param});
throw ex;
}
}
}
@Override
protected void setParameterInternal(
PreparedStatement ps, int index, Object value, String jdbcType, LobCreator lobCreator)
throws SQLException {
lobCreator.setClobAsString(ps, index, (String) value);
}