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https://issues.apache.org/jira/browse/THRIFT-872?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12915759#action_12915759
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Dave Engberg commented on THRIFT-872:
-------------------------------------
No, I don't think that a full J2SE/J2EE implementation can be cleanly merged
with a JavaME implementation, since JavaSE is basically an ancient subset that
then moved away from the original roots with its IO libraries, etc. There are
no generics, no iterators, no 'enum', the only collections are Vector and
Hashtable, etc.
I thought about trying to put the JavaME generation into the core Java
generator as conditional options (like I originally did with the JavaBean
stuff), but the conditional logic everywhere would have made the generator very
messy.
> Add 'primitive' option to 'Java' code generator
> -----------------------------------------------
>
> Key: THRIFT-872
> URL: https://issues.apache.org/jira/browse/THRIFT-872
> Project: Thrift
> Issue Type: New Feature
> Components: Java - Compiler
> Affects Versions: 0.4
> Reporter: Dave Engberg
> Fix For: 0.6
>
> Attachments: java-primitive-872-v2.patch,
> java-primitive-872-v3.patch, java-primitive-872.patch
>
>
> I'm attaching a patch that modifies 0.4.0 to add a new 'primitive' compiler
> option to the Java code generator that will produce a style of code that
> reduces library dependencies for generated struct and service interfaces.
> This will make the generated code easier to use in some contexts and more
> compatible with generated code from prior Thrift releases.
> The 'primitive' option changes generated code in the following ways:
> * Removes dependencies on: BitSet, ByteBuffer, and the third-party
> org.slf4j.Logger*
> * The 'isset' vector is implemented via boolean[] instead of BitSet
> * The 'Iface' interface for service 'Foo' is moved from an inner class to
> top-level FooIface.jar (and replaced with dummy Foo.Iface which just extends
> FooIface)
> * 'binary' fields from the IDL are changed from ByteBuffer back to byte[]
> The patch also includes runtime support library changes:
> * Added writeBinary(byte[]) and readBytes() methods to TProtocol to read and
> write byte[] primitives
> * Added TBaseHelper.toString(byte[],StringBuilder)
> To use (e.g.): thrift -r --gen java:beans,primitive Foo.thrift
> Rationale:
> 1) The generated structures and services are more compatible with previous
> versions (in particular, v 0.2.0), requiring fewer code changes for existing
> projects upgrading to 0.4.0.
> 2) The generated POJO structures and service interfaces have a much lower
> external dependency "footprint", so may be used more easily in platforms and
> libraries. For example, the structure *.java files and the FooIface.java
> files may be used within restricted environments like GWT, which don't
> support java.nio.ByteBuffer, java.util.BitSet, or org.slf4j.*
> (http://www.projectpossibility.org/projects/word_prediction/gwt-linux-1.4.60/doc/html/jre.html)
> 3) In some contexts, 'binary' data fields may require fewer lines of code to
> juggle and serialize slightly faster.
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