C M P   2 . 0  

Tag Name 

Description 

Required 

list cache max  This specifies the number of read lists that can be tracked by  No, default is 

this entity. This option is discussed in Chapter 6 of the 

1000 

JBossCMP Documentation. 

table name 

This is the name of the table that will hold data for this 

No, default is 

entity. Each entity instance will be stored in one row of this 

ejb name 

table. 

In the cmp field element, you can control the name and datatype of the column. A cmp field 

can also be mapped to several columns, and this is discussed in Chapter 3 of the JBossCMP 

Documentation.  A detailed description of each element is shown in Table 9 2. 

Table 9 2, cmp field Tags 

Tag Name 

Description 

Required 

field name 

This is the name of the cmp field that is being configured. It  Yes 

must match the name of a cmp field declared for this entity 

in the ejb jar.xml file. 

column name 

This is the name of the column to which the cmp field is 

No, default is 

mapped. 

field name 

not null 

If this empty element is present, JBossCMP will add NOT 

No, default for 

NULL to the end of the column declaration when 

primary key 

automatically creating the table for this entity. 

fields and 

primitives is 

not null 

jdbc type 

This is the JDBC type that is used when setting parameters in  Only required if 

a JDBC PreparedStatement or loading data from a JDBC 

sql type is 

ResultSet. The valid types are defined in java.sql.Types. 

specified, default 

is based on 

datasource 

mapping 

sql type 

This is the SQL type that is used in create table statements 

Only required if 

for this field. Valid sql types are only limited by your 

jdbc type is 

database vendor. 

specified, default 

is based on 

datasource 

mapping 

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