Hibernate Tools生成注释
最近做项目时,使用Hibernate Tools 3.2.4生成entity和hbm.xml,但默认情况下,DB中的comments没法生成到javadoc和xml中,改了templates倒是有注释了,但却是乱码,心里一直耿耿于怀...(这不符合咱一直强调的编码规范不是?最主要的是人懒,有时用entity不想再找文档)。在网上找了半天,大多说是freemarker编码设置问题,但不管怎么设置,都没一点效果,决定自己动手。下了源码,查到原因,人家压根就没处理中文问题。记录一下处理过程。
ftl是freemarker模板,可以在jar包外使用,java和properties重新打包替换hibernate-tools.jar,如果是eclipse-plugins,jar包在plugins\org.hibernate.eclipse_3.2.4.GA-R200905070146-H18\lib\tools\hibernate-tools.jar
pojo\PojoFields.ftl
<
#
--
//
Fields -->
![]()
<
#foreach field in pojo.getAllPropertiesIterator()
><
#
if
pojo.getMetaAttribAsBool(field,
"
gen-property
"
,
true
)
>
/** */
/** */
/** */
/**
<#if pojo.hasMetaAttribute(field, "field-description")>
${pojo.getFieldJavaDoc(field, 0)}
</#if>
<#foreach column in field.columnIterator><#if column.comment?exists && column.comment?trim?length!=0> * ${column.comment}.
</#if>
</#foreach>
*/
![]()
$
{pojo.getFieldModifiers(field)}
$
{pojo.getJavaTypeName(field, jdk5)}
$
{field.name}
<
#
if
pojo.hasFieldInitializor(field, jdk5)
>
=
$
{pojo.getFieldInitialization(field, jdk5)}
</
#
if
>
;
</
#
if
>
</
#foreach
>
pojo\PojoPropertyAccessors.ftl
<
#
--
//
Property accessors -->
<
#foreach property in pojo.getAllPropertiesIterator()
>
<
#
if
pojo.getMetaAttribAsBool(property,
"
gen-property
"
,
true
)
>

/** */
/**
<#if pojo.hasFieldJavaDoc(property)>
* ${pojo.getFieldJavaDoc(property, 4)}
</#if>
<#foreach column in property.columnIterator><#if column.comment?exists && column.comment?trim?length!=0> * 取得 ${column.comment}.
</#if>
</#foreach>
*/
<
#include
"
GetPropertyAnnotation.ftl
"
/>

$
{pojo.getPropertyGetModifiers(property)}
$
{pojo.getJavaTypeName(property, jdk5)}
$
{pojo.getGetterSignature(property)}
()
{

return this.$
{property.name};
}


/** */
/**
<#if pojo.hasFieldJavaDoc(property)>
* ${pojo.getFieldJavaDoc(property, 4)}
</#if>
<#foreach column in property.columnIterator><#if column.comment?exists && column.comment?trim?length!=0> * 设置 ${column.comment}.
</#if>
</#foreach>
*/

$
{pojo.getPropertySetModifiers(property)}
void
set$
{pojo.getPropertyName(property)}
($
{pojo.getJavaTypeName(property, jdk5)}
$
{property.name}
)
{

this.$
{property.name} = $
{property.name};
}
</
#
if
>
</
#foreach
>
org\hibernate\tool\hbm2x\TemplateProducer.java
public
void
produce(Map additionalContext, String templateName, File destination, String identifier, String fileType, String rootContext)
{
String tempResult = produceToString( additionalContext, templateName, rootContext );

if(tempResult.trim().length()==0)
{
log.warn("Generated output is empty. Skipped creation for file " + destination);
return;
}
FileWriter fileWriter
=
null
;
Writer fileWriter = null;

try
{
th.ensureExistence( destination );
ac.addFile(destination, fileType);
log.debug("Writing " + identifier + " to " + destination.getAbsolutePath() );
fileWriter
=
new
FileWriter(destination);
fileWriter = new BufferedWriter(new OutputStreamWriter(new FileOutputStream(destination), "UTF-8"));

fileWriter.write(tempResult);
}

catch (Exception e)
{
throw new ExporterException("Error while writing result to file", e);

} finally
{

if(fileWriter!=null)
{

try
{
fileWriter.flush();
fileWriter.close();
}

catch (IOException e)
{
log.warn("Exception while flushing/closing " + destination,e);
}
}
}
}
org\hibernate\tool\hbm2x\jtidy.properties
indent
=
auto
indent
-
spaces
=
4
#indent
-
attributes
=
yes
wrap = 180
markup
=
yes
clean
=
yes
output
-
xml
=
yes
input
-
xml
=
yes
show
-
warnings
=
yes
trim
-
empty
-
elements
=
yes
input-encoding=utf-8
output-encoding=utf-8
补充:
无法取得MySQL5 Table的Comments,修改org.hibernate.cfg.reveng.dialec.MySQLMetaDataDialect
重载getTables方法
/** */
/**
* MetaData中无法取得table Comment,重载
*/
@Override
![]()
public
Iterator getTables(String xcatalog, String xschema, String xtable)
{
![]()
try
{
final String catalog = caseForSearch(xcatalog);
final String schema = caseForSearch(xschema);
final String table = caseForSearch(xtable);
![]()
log.debug("getTables(" + catalog + "." + schema + "." + table + ")");
![]()
![]()
ResultSet tableRs = getMetaData().getTables(catalog, schema, table, new String[]
{ "TABLE", "VIEW" });
![]()
![]()
return new ResultSetIterator(tableRs, getSQLExceptionConverter())
{
![]()
Map element = new HashMap();
![]()
![]()
protected Object convertRow(ResultSet tableResultSet) throws SQLException
{
element.clear();
putTablePart(element, tableResultSet);
element.put("TABLE_TYPE", tableResultSet.getString("TABLE_TYPE"));
![]()
String remarks = tableResultSet.getString("REMARKS");
![]()
if (StringHelper.isEmpty(remarks))
{
String sql = "show table status " + (schema == null ? "" : " from " + schema + " ") + " like '"
+ element.get("TABLE_NAME") + "' ";
PreparedStatement statement = getConnection().prepareStatement(sql);
![]()
ResultSet tableRs = statement.executeQuery();
![]()
![]()
if (tableRs.next())
{
remarks = tableRs.getString("COMMENT");
}
}
element.put("REMARKS", remarks);
return element;
}
![]()
![]()
protected Throwable handleSQLException(SQLException e)
{
// schemaRs and catalogRs are only used for error reporting if
// we get an exception
String databaseStructure = getDatabaseStructure(catalog, schema);
throw getSQLExceptionConverter().convert(
e,
"Could not get list of tables from database. Probably a JDBC driver problem. "
+ databaseStructure, null);
}
};
![]()
} catch (SQLException e)
{
// schemaRs and catalogRs are only used for error reporting if we get an exception
String databaseStructure = getDatabaseStructure(xcatalog, xschema);
throw getSQLExceptionConverter().convert(e,
"Could not get list of tables from database. Probably a JDBC driver problem. " + databaseStructure,
null);
}
}
外键默认生成List,修改org.hibernate.cfg.JDBCBinder
/** */
/**
* @param rc
* @param processed
* @param table
* @param object
*/
![]()
private
Property bindOneToMany(PersistentClass rc, ForeignKey foreignKey, Set processed, Mapping mapping)
{
![]()
Table collectionTable = foreignKey.getTable();
Collection collection
=
new
org.hibernate.mapping.Set(rc);
//
MASTER TODO: allow overriding collection type
Collection collection = new org.hibernate.mapping.Bag(rc); // MASTER TODO: allow overriding collection type
。。。
ftl是freemarker模板,可以在jar包外使用,java和properties重新打包替换hibernate-tools.jar,如果是eclipse-plugins,jar包在plugins\org.hibernate.eclipse_3.2.4.GA-R200905070146-H18\lib\tools\hibernate-tools.jar
pojo\PojoFields.ftl




pojo\PojoPropertyAccessors.ftl
















































org\hibernate\tool\hbm2x\TemplateProducer.java




















































org\hibernate\tool\hbm2x\jtidy.properties



wrap = 180








补充:
无法取得MySQL5 Table的Comments,修改org.hibernate.cfg.reveng.dialec.MySQLMetaDataDialect
重载getTables方法









外键默认生成List,修改org.hibernate.cfg.JDBCBinder

。。。