ADF Business Component Type MAP Oracls vs Java

what the advantages and disadvantages from each one map type
thank in advance

Take a look at this link in developer's guide:
http://docs.oracle.com/cd/E16162_01/web.1112/e16182/bcintro.htm#sm0062
The Java Extended for Oracle type map and the Oracle Domains type map handle numeric data differently. When you create a new application the default type map Java Extended for Oracle maps numeric data to the java.math.BigDecimal >class, which inherits from java.math.Number. The java.math.BigDecimal default matches the way the Fusion web application view layer, consisting of ADF Faces components, preserves alignment of numeric data (such as numeric values >displayed by ADF Faces input fields in a web page). Whereas the Oracle Domains type map, which maps numeric data to the oracle.jbo.domain.Number class, may not display the data with the alignment expected by certain ADF Faces >components. Aside from this alignment issue, the Oracle Domains type map remains a valid choice and applications without ADF Faces components will function without issue.Thanks,
Navaneeth

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