Remove blank lines in SQL

[zhaoxi2000]

Question:
MyBatis build SQL include many blank lines from XML.
The blank lines is unnecessary.

https://issues.apache.org/jira/browse/IBATIS-143

class XMLScriptBuilder
Let XNode replace '\n' or "\r\n" to ' ' .
I want the feature can be configurable.

[kazuki43zoo]

Hi @zhaoxi1988 , contributing welcome!! :D

[zhaoxi2000]

Oh. I accept it.

By the way.
Why do not mybatis's package name 'org.apache.mybatis' ?

[George5814]

@zhaoxi1988 Is the problem solved?

[zhaoxi2000]

@George5814 Still not solved...I busy on mybatis UnitTest...

[zhaoxi2000]

@George5814
My idea:
1.add in org.apache.ibatis.session.Configuration
2.push configuration down , let SqlSourceBuilder trim '\r|\n' or replace('\r|\n', ' ')

单元测试在IntelliJ上, 只安装JDK8有点尴尬...

[harawata]

I'm wondering why this feature request gets many votes.
Is there any actual harm caused by the extra blank lines?

[George5814]

This is to delete the extra whitespace produced by the dynamic tags, not to beautify the SQL.
Improve readability.

[harawata]

@George5814
Recent versions of MyBatis remove blank lines when printing the log, so where do you see the SQLs with blank lines?

[zhaoxi2000]

@harawata Because the Database Server logging SQL is not convenient.
Then the next requirement is that tracing SQL instance in MyBatis , e.g. underlying one MapperFile.

[zhaoxi2000]

@harawata I was an DBA. I see the problem like MySQL truncate the SQL because of the many blank lines.

[harawata]

@zhaoxi1988 ,
Do you mean that the length of a generated SQL exceeds max_allowed_packet ?

[zhaoxi2000]

@harawata

Do you mean that the length of a generated SQL exceeds max_allowed_packet

It is not.
It is MySQL's query-log or InnoDB log when had a dead lock.

[harawata]

@zhaoxi1988 ,

Thank you for the comment!

It is MySQL's query-log or InnoDB log when had a dead lock.

Okay. As I commented on the PR, the best we can do is to reduce the number of line breaks, probably.

[zhboseu]

Question:
MyBatis build SQL include many blank lines from XML.
The blank lines is unnecessary.

https://issues.apache.org/jira/browse/IBATIS-143

class XMLScriptBuilder
Let XNode replace '\n' or "\r\n" to ' ' .
I want the feature can be configurable.

Hi, is this problem solved?