Paul Sun created OLINGO-1534:
--------------------------------
Summary: Error serializing CsdlLogicalOrComparisonExpression to
json format
Key: OLINGO-1534
URL: https://issues.apache.org/jira/browse/OLINGO-1534
Project: Olingo
Issue Type: Bug
Components: odata4-server
Reporter: Paul Sun
I use code below to generate a CsdlLogicalOrComparisonExpression.
{code:java}
CsdlLogicalOrComparisonExpression conditionExp =
new
CsdlLogicalOrComparisonExpression(CsdlLogicalOrComparisonExpression.LogicalOrComparisonExpressionType.Eq);
conditionExp.setLeft(new CsdlPath().setValue("age"));
conditionExp.setRight(new
CsdlConstantExpression(CsdlConstantExpression.ConstantExpressionType.Int,
"30"));
{code}
If serialize with ODataXmlSerializer, it works fine, result is as below.
{code:java}
<Eq><Path>age</Path> <Int>30</Int> </Eq>
{code}
But when I use ODataJsonSerializer, an error occurs.
Caused by: com.fasterxml.jackson.core.JsonGenerationException: Can not write a
field name, expecting a valueCaused by:
com.fasterxml.jackson.core.JsonGenerationException: Can not write a field name,
expecting a value at
com.fasterxml.jackson.core.JsonGenerator._reportError(JsonGenerator.java:2080)
at
com.fasterxml.jackson.core.json.UTF8JsonGenerator.writeFieldName(UTF8JsonGenerator.java:220)
at
com.fasterxml.jackson.core.JsonGenerator.writeObjectFieldStart(JsonGenerator.java:1754)
at
org.apache.olingo.server.core.serializer.json.MetadataDocumentJsonSerializer.appendConstantExpression(MetadataDocumentJsonSerializer.java:1086)
at
org.apache.olingo.server.core.serializer.json.MetadataDocumentJsonSerializer.appendExpression(MetadataDocumentJsonSerializer.java:844)
at
org.apache.olingo.server.core.serializer.json.MetadataDocumentJsonSerializer.appendLogicalOrComparisonExpression(MetadataDocumentJsonSerializer.java:1051)
at
org.apache.olingo.server.core.serializer.json.MetadataDocumentJsonSerializer.appendDynamicExpression(MetadataDocumentJsonSerializer.java:870)
at
org.apache.olingo.server.core.serializer.json.MetadataDocumentJsonSerializer.appendExpression(MetadataDocumentJsonSerializer.java:846)
at
org.apache.olingo.server.core.serializer.json.MetadataDocumentJsonSerializer.appendDynamicExpression(MetadataDocumentJsonSerializer.java:1020)
at
org.apache.olingo.server.core.serializer.json.MetadataDocumentJsonSerializer.appendExpression(MetadataDocumentJsonSerializer.java:846)
at
org.apache.olingo.server.core.serializer.json.MetadataDocumentJsonSerializer.appendAnnotations(MetadataDocumentJsonSerializer.java:831)
at
org.apache.olingo.server.core.serializer.json.MetadataDocumentJsonSerializer.appendEntityTypes(MetadataDocumentJsonSerializer.java:624)
at
org.apache.olingo.server.core.serializer.json.MetadataDocumentJsonSerializer.appendSchema(MetadataDocumentJsonSerializer.java:176)
at
org.apache.olingo.server.core.serializer.json.MetadataDocumentJsonSerializer.appendDataServices(MetadataDocumentJsonSerializer.java:157)
at
org.apache.olingo.server.core.serializer.json.MetadataDocumentJsonSerializer.writeMetadataDocument(MetadataDocumentJsonSerializer.java:151)
at
org.apache.olingo.server.core.serializer.json.ODataJsonSerializer.metadataDocument(ODataJsonSerializer.java:167)
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