Hibernate replaces annotations or auto-generated table structures in XML files using custom scripts

This paper mattered meters along

This address: http://blog.csdn.net/sushengmiyan/article/details/50534361

We all know that we can use Hibernate's metadata metadata to generate the table structure, but in general, we just rely on hibernate automatic generation is not enough, we look forward to using their own SQL script, you hibernate automatically execute that script can. So hibernate support does not support it? The answer is yes! .

We only need to do the following settings:

<property name= "Hibernate.hbm2ddl.auto" value= "create"/> <property name=           "Hibernate.hbm2ddl.import_ Files_sql_extractor "value=" Org.hibernate.tool.hbm2ddl.MultipleLinesSqlCommandExtractor "/><property name=" Javax.persistence.schema-generation.database.action "  value=" drop-and-create "/><property name=" Javax.persistence.schema-generation.create-source "value=" script "/><property name=" Javax.persistence.schema-generation.create-script-source "value=" Meta-inf/complexschemas/loadscript.sql.txt "/ >

Explain the following:

1.hibernate.hbm2ddl.auto Setting the database table structure every time

2.hibernate.hbm2ddl.import_files_sql_extractor Open script multi-line execution.

3.javax.persistence.schema-generation.database.action database is drop and regenerate every time

4.javax.persistence.schema-generation.create-source generated in a custom script

The location of the 5.javax.persistence.schema-generation.create-script-source script.

Reference:

Http://docs.oracle.com/javaee/7/tutorial/persistence-intro005.htm

Hibernate replaces annotations or auto-generated table structures in XML files using custom scripts