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https://issues.apache.org/jira/browse/AVRO-1099?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13282019#comment-13282019
]
John Jenkins commented on AVRO-1099:
------------------------------------
Sorry for the comment spam. I wish I could have just edited my original. If you
change the "type" of "DoubleValue" from "double" to ["double", "int"] like this:
{code}
/**
* This is a sample Avro schema for an entry with multiple possible types,
* "double" or "int".
*/
private static final String DEFINITION =
"{" +
"\"namespace\":\"test\"," +
"\"type\":\"record\"," +
"\"name\":\"DoubleTest\"," +
"\"fields\":[" +
"{" +
"\"type\":[\"double\", \"int\"]," +
"\"name\":\"DoubleValue\"" +
"}" +
"]" +
"}";
{code}
Then, it will always throw an exception now matter which example you use:
{code}
Exception in thread "main" org.apache.avro.AvroTypeException: Expected
start-union. Got VALUE_NUMBER_FLOAT
at org.apache.avro.io.JsonDecoder.error(JsonDecoder.java:697)
at org.apache.avro.io.JsonDecoder.readIndex(JsonDecoder.java:441)
at
org.apache.avro.io.ResolvingDecoder.doAction(ResolvingDecoder.java:229)
at org.apache.avro.io.parsing.Parser.advance(Parser.java:88)
at
org.apache.avro.io.ResolvingDecoder.readIndex(ResolvingDecoder.java:206)
at
org.apache.avro.generic.GenericDatumReader.read(GenericDatumReader.java:148)
at
org.apache.avro.generic.GenericDatumReader.readRecord(GenericDatumReader.java:173)
at
org.apache.avro.generic.GenericDatumReader.read(GenericDatumReader.java:144)
at
org.apache.avro.generic.GenericDatumReader.read(GenericDatumReader.java:135)
at test.AvroIntTest.main(AvroIntTest.java:62)
{code}
> Int / Float cannot be decoded
> -----------------------------
>
> Key: AVRO-1099
> URL: https://issues.apache.org/jira/browse/AVRO-1099
> Project: Avro
> Issue Type: Bug
> Components: java
> Affects Versions: 1.6.3
> Environment: Mac OS X 10.7.3. Eclipse IDE for Java EE Developers
> 1.4.2.20120213
> Reporter: John Jenkins
> Labels: patch
>
> I am currently using a JSON library that is encoding 0 for a double to "0"
> instead of "0.0", without the quotes. First, I feel that "0" is a perfectly
> valid value for 0 as a double. But, I tried to code around it by changing the
> "type" of the field to "["double", "int"]", without the quotes and it is
> giving me this error:
> Exception in thread "main" org.apache.avro.AvroTypeException: Expected
> start-union. Got VALUE_NUMBER_INT
> at org.apache.avro.io.JsonDecoder.error(JsonDecoder.java:697)
> at org.apache.avro.io.JsonDecoder.readIndex(JsonDecoder.java:441)
> at
> org.apache.avro.io.ResolvingDecoder.doAction(ResolvingDecoder.java:229)
> at org.apache.avro.io.parsing.Parser.advance(Parser.java:88)
> at
> org.apache.avro.io.ResolvingDecoder.readIndex(ResolvingDecoder.java:206)
> at
> org.apache.avro.generic.GenericDatumReader.read(GenericDatumReader.java:148)
> at
> org.apache.avro.generic.GenericDatumReader.readRecord(GenericDatumReader.java:173)
> at
> org.apache.avro.generic.GenericDatumReader.read(GenericDatumReader.java:144)
> at
> org.apache.avro.generic.GenericDatumReader.read(GenericDatumReader.java:135)
> If I change it to just "int", then it works for a few records until it
> reaches a double.
> Thank you,
> John
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