Java: Generate pom.xml with the appropriate version number.

This commit removes pom.xml and replaces it with a trivial
tool to generate it, filling in the appropriate version of
the TensorFlow runtime.
Change: 143861686

tensorflow/java/BUILD

@@ -92,6 +92,20 @@ cc_binary(
     deps = ["//tensorflow/java/src/main/native"],
 )
 
+genrule(
+    name = "pom",
+    outs = ["pom.xml"],
+    cmd = "$(location generate_pom) >$@",
+    output_to_bindir = 1,
+    tools = [":generate_pom"],
+)
+
+cc_binary(
+    name = "generate_pom",
+    srcs = ["generate_pom.cc"],
+    deps = ["//tensorflow/c:c_api"],
+)
+
 # System.loadLibrary() on OS X looks for ".dylib" or ".jnilib"
 # and no ".so". If and when https://github.com/bazelbuild/bazel/issues/914
 # is resolved, perhaps this workaround rule can be removed.

tensorflow/java/README.md

@@ -40,22 +40,28 @@ bazel build -c opt \
   //tensorflow/java:libtensorflow-jni
 ```
 
-To use the library in an external Java project, publish the library to a Maven repository.  For example,
+### Maven
-publish the library to the local Maven repository using the `mvn` tool (installed separately):
+
+To use the library in an external Java project, publish the library to a Maven
+repository.  For example, publish the library to the local Maven repository
+using the `mvn` tool (installed separately):
 
 ```sh
+bazel build -c opt //tensorflow/java:pom
 mvn install:install-file \
-  -Dfile=bazel-bin/tensorflow/java/libtensorflow.jar \
+  -Dfile=../../bazel-bin/tensorflow/java/libtensorflow.jar \
-  -DpomFile=tensorflow/java/pom.xml
+  -DpomFile=../../bazel-bin/tensorflow/java/pom.xml
 ```
 
-Refer to the library using Maven coordinates.  For example, if you're using Maven then place this dependency into your `pom.xml` file:
+Refer to the library using Maven coordinates.  For example, if you're using
+Maven then place this dependency into your `pom.xml` file (replacing
+0.12.head with the version of the TensorFlow runtime you wish to use).
 
 ```xml
 <dependency>
   <groupId>org.tensorflow</groupId>
   <artifactId>libtensorflow</artifactId>
-  <version>0.12.0-SNAPSHOT</version>
+  <version>0.12.head</version>
 </dependency>
 ```
 

tensorflow/java/generate_pom.cc

@@ -1,6 +1,4 @@
-<?xml version="1.0" encoding="UTF-8"?>
+/* Copyright 2016 The TensorFlow Authors. All Rights Reserved.
-<!--
-Copyright 2016 The TensorFlow Authors. All Rights Reserved.
 
 Licensed under the Apache License, Version 2.0 (the "License");
 you may not use this file except in compliance with the License.
@@ -13,14 +11,22 @@ distributed under the License is distributed on an "AS IS" BASIS,
 WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 See the License for the specific language governing permissions and
 limitations under the License.
--->
+==============================================================================*/
+
+#include <iostream>
+#include <string>
+
+#include "tensorflow/c/c_api.h"
+
+int main(int argc, char** argv) {
+  std::string tmpl(R"EOF(
 <project xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd" xmlns="http://maven.apache.org/POM/4.0.0"
     xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
 
   <modelVersion>4.0.0</modelVersion>
   <groupId>org.tensorflow</groupId>
   <artifactId>libtensorflow</artifactId>
-  <version>0.12.0-SNAPSHOT</version>
+  <version>{{TENSORFLOW_VERSION}}</version>
   <packaging>jar</packaging>
 
   <name>tensorflow</name>
@@ -40,5 +46,15 @@ limitations under the License.
     <connection>git@github.com:tensorflow/tensorflow.git</connection>
     <developerConnection>scm:git:https://github.com/tensorflow/tensorflow.git</developerConnection>
   </scm>
-    
 </project>
+  )EOF");
+
+  const std::string var("{{TENSORFLOW_VERSION}}");
+  const std::string val(TF_Version());
+  for (size_t pos = tmpl.find(var); pos != std::string::npos;
+       pos = tmpl.find(var)) {
+    tmpl.replace(pos, var.size(), val);
+  }
+  std::cout << tmpl;
+  return 0;
+}