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https://issues.apache.org/jira/browse/AVRO-1891?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15465673#comment-15465673
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ASF GitHub Bot commented on AVRO-1891:
--------------------------------------
GitHub user rdblue opened a pull request:
https://github.com/apache/avro/pull/118
AVRO-1891: Fix specific nested logical types
This changes the datum readers to use `getConversionFor` and
`getConversionByClass` instance methods that delegate to the data models. This
allows specific to use a set of conversions determined by the current record
class to pick up the conversions that were present when it was compiled.
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/rdblue/avro
AVRO-1891-fix-specific-nested-logical-types
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/avro/pull/118.patch
To close this pull request, make a commit to your master/trunk branch
with (at least) the following in the commit message:
This closes #118
----
commit 6c04cb3f3daec9e87e49d440faa35a248767fb3b
Author: Ryan Blue <[email protected]>
Date: 2016-09-04T21:54:40Z
AVRO-1908: Fix TestSpecificCompiler reference to private method.
AVRO-1884 changed makePath to a private method from a package-private
static method. This broke the test that references the method in IPC.
The fix is to make the instance method package-private and update the
test to use an instance of SpecificCompiler.
commit 31be7fa9d4589e7553d274d089aa3bf97c0297b3
Author: Ryan Blue <[email protected]>
Date: 2016-09-05T19:15:09Z
AVRO-1891: Add conversion getters to datum readers.
This adds getConversionFor and getConversionByClass to
GenericDatumReader so that SpecificDatumReader can override them to
resolve conversions using the set of conversions used when a specific
class was compiled, determined by the CONVERSIONS static variable or by
adding the conversions for each field returned by getConversion(String).
commit cf5bff3b6f7d312a65c28dbb053e6dbb6ab61c58
Author: Ryan Blue <[email protected]>
Date: 2016-09-05T19:44:13Z
AVRO-1891: Java: Add converions to compiled specific records.
This adds a CONVERSIONS static field with the converisons that the
specific compiler used to produce a record. Together with the last
commit, this will enable new specific classes to use nested logical
types.
----
> Generated Java code fails with union containing logical type
> ------------------------------------------------------------
>
> Key: AVRO-1891
> URL: https://issues.apache.org/jira/browse/AVRO-1891
> Project: Avro
> Issue Type: Bug
> Components: java, logical types
> Affects Versions: 1.8.1
> Reporter: Ross Black
> Priority: Blocker
> Fix For: 1.8.3
>
> Attachments: AVRO-1891.patch, AVRO-1891.yshi.1.patch,
> AVRO-1891.yshi.2.patch, AVRO-1891.yshi.3.patch, AVRO-1891.yshi.4.patch
>
>
> Example schema:
> {code}
> {
> "type": "record",
> "name": "RecordV1",
> "namespace": "org.brasslock.event",
> "fields": [
> { "name": "first", "type": ["null", {"type": "long",
> "logicalType":"timestamp-millis"}]}
> ]
> }
> {code}
> The avro compiler generates a field using the relevant joda class:
> {code}
> public org.joda.time.DateTime first
> {code}
> Running the following code to perform encoding:
> {code}
> final RecordV1 record = new
> RecordV1(DateTime.parse("2016-07-29T10:15:30.00Z"));
> final DatumWriter<RecordV1> datumWriter = new
> SpecificDatumWriter<>(record.getSchema());
> final ByteArrayOutputStream stream = new ByteArrayOutputStream(8192);
> final BinaryEncoder encoder =
> EncoderFactory.get().directBinaryEncoder(stream, null);
> datumWriter.write(record, encoder);
> encoder.flush();
> final byte[] bytes = stream.toByteArray();
> {code}
> fails with the exception stacktrace:
> {code}
> org.apache.avro.AvroRuntimeException: Unknown datum type
> org.joda.time.DateTime: 2016-07-29T10:15:30.000Z
> at org.apache.avro.generic.GenericData.getSchemaName(GenericData.java:741)
> at
> org.apache.avro.specific.SpecificData.getSchemaName(SpecificData.java:293)
> at org.apache.avro.generic.GenericData.resolveUnion(GenericData.java:706)
> at
> org.apache.avro.generic.GenericDatumWriter.resolveUnion(GenericDatumWriter.java:192)
> at
> org.apache.avro.generic.GenericDatumWriter.writeWithoutConversion(GenericDatumWriter.java:110)
> at
> org.apache.avro.specific.SpecificDatumWriter.writeField(SpecificDatumWriter.java:87)
> at
> org.apache.avro.generic.GenericDatumWriter.writeRecord(GenericDatumWriter.java:143)
> at
> org.apache.avro.generic.GenericDatumWriter.writeWithoutConversion(GenericDatumWriter.java:105)
> at
> org.apache.avro.generic.GenericDatumWriter.write(GenericDatumWriter.java:73)
> at
> org.apache.avro.generic.GenericDatumWriter.write(GenericDatumWriter.java:60)
> at
> org.brasslock.avro.compiler.GeneratedRecordTest.shouldEncodeLogicalTypeInUnion(GeneratedRecordTest.java:82)
> at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
> at
> sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
> at
> sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
> at java.lang.reflect.Method.invoke(Method.java:498)
> at
> org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:50)
> at
> org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:12)
> at
> org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:47)
> at
> org.junit.internal.runners.statements.InvokeMethod.evaluate(InvokeMethod.java:17)
> at org.junit.runners.ParentRunner.runLeaf(ParentRunner.java:325)
> at
> org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:78)
> at
> org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:57)
> at org.junit.runners.ParentRunner$3.run(ParentRunner.java:290)
> at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:71)
> at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:288)
> at org.junit.runners.ParentRunner.access$000(ParentRunner.java:58)
> at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:268)
> at org.junit.runners.ParentRunner.run(ParentRunner.java:363)
> at org.junit.runner.JUnitCore.run(JUnitCore.java:137)
> at
> com.intellij.junit4.JUnit4IdeaTestRunner.startRunnerWithArgs(JUnit4IdeaTestRunner.java:117)
> at
> com.intellij.junit4.JUnit4IdeaTestRunner.startRunnerWithArgs(JUnit4IdeaTestRunner.java:42)
> at
> com.intellij.rt.execution.junit.JUnitStarter.prepareStreamsAndStart(JUnitStarter.java:253)
> at com.intellij.rt.execution.junit.JUnitStarter.main(JUnitStarter.java:84)
> at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
> at
> sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
> at
> sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
> at java.lang.reflect.Method.invoke(Method.java:498)
> at com.intellij.rt.execution.application.AppMain.main(AppMain.java:147)
> {code}
> The failure can be fixed by explicitly adding the relevant conversion(s) to
> DatumWriter / SpecificData:
> {code}
> final RecordV1 record = new
> RecordV1(DateTime.parse("2007-12-03T10:15:30.00Z"));
> final SpecificData specificData = new SpecificData();
> specificData.addLogicalTypeConversion(new
> TimeConversions.TimestampConversion());
> final DatumWriter<RecordV1> datumWriter = new
> SpecificDatumWriter<>(record.getSchema(), specificData);
> final ByteArrayOutputStream stream = new
> ByteArrayOutputStream(AvroUtil.DEFAULT_BUFFER_SIZE);
> final BinaryEncoder encoder =
> EncoderFactory.get().directBinaryEncoder(stream, null);
> datumWriter.write(record, encoder);
> encoder.flush();
> final byte[] bytes = stream.toByteArray();
> {code}
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