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https://issues.apache.org/jira/browse/OLINGO-605?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14499250#comment-14499250
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Manuel Blechschmidt commented on OLINGO-605:
--------------------------------------------
Just hit the following problem:
{code}
06:44:39,015 ERROR [stderr] (default task-9) Caused by:
org.apache.olingo.odata2.api.edm.EdmSimpleTypeException: The metadata
constraints '[Nullable=true, MaxLength=255]' do not allow to format the value
'MULTIPOLYGON (((4458419.63 5343938.24, 4458395.73 5343927.45, 4458391.04
5343926.99, 42343450.1 5343907.92, 4458301.19 5343887.61, 4458297 5343894.81,
4458305.49 5343912.5, 4458313.13 5343928.43, 4458322.14 5343947.21, 4458328.43
5343972.9, 4458332.47 5343989.38, 4458369.33 5343993.28, 4458437.89 2342314.53,
4458553.12 42354313.86, 4458555.73 5344011.83, 4458498.07 5343979.64,
4458458.23 5343958.08, 4458425.61 5343942.69, 4458419.63 5343938.24)))'.
06:44:39,016 ERROR [stderr] (default task-9) at
org.apache.olingo.odata2.core.edm.EdmString.internalValueToString(EdmString.java:80)
06:44:39,016 ERROR [stderr] (default task-9) at
org.apache.olingo.odata2.core.edm.AbstractSimpleType.valueToString(AbstractSimpleType.java:112)
06:44:39,016 ERROR [stderr] (default task-9) at
org.apache.olingo.odata2.core.ep.producer.XmlPropertyEntityProducer.appendProperty(XmlPropertyEntityProducer.java:201)
06:44:39,016 ERROR [stderr] (default task-9) at
org.apache.olingo.odata2.core.ep.producer.XmlPropertyEntityProducer.append(XmlPropertyEntityProducer.java:67)
06:44:39,016 ERROR [stderr] (default task-9) ... 59 more
{code}
So I had to specify a length attribute on the column.
> Olingo should support custom types e.g. Geometry by using XmlAdapter from JaxB
> ------------------------------------------------------------------------------
>
> Key: OLINGO-605
> URL: https://issues.apache.org/jira/browse/OLINGO-605
> Project: Olingo
> Issue Type: New Feature
> Components: odata2-jpa
> Affects Versions: V2 2.0.3
> Reporter: Manuel Blechschmidt
> Priority: Minor
> Labels: GIS, custom, spatial, types
>
> I am currently developing a software where I save GIS coordinates as part of
> my entities. I want to send these geometries as a string through OData to a
> client.
> Technically I do the following:
> OpenGis -> Hibernate Spatial -> JPA -> Olingo -> JavaScript
> I already have an XmlAdapter that maps my Geometry to WKT. I want to use this
> as well for Olingo serialization
> I copied the following file in my workspace and extended the
> convertToEdmSimpleType function:
> org.apache.olingo.odata2.jpa.processor.core.access.model.JPATypeConvertor
> {code:java}
> public static EdmSimpleTypeKind
> ...
> } else if(jpaType.equals(Geometry.class)) {
> // "OData - JPA Type Converter: Type [class
> com.vividsolutions.jts.geom.Geometry] not supported"
> return EdmSimpleTypeKind.String;
> }
> throw
> ODataJPAModelException.throwException(ODataJPAModelException.TYPE_NOT_SUPPORTED
> .addContent(jpaType.toString()), null);
> }
> {code}
> This is quick and dirty and it would be nice if there would be a cleaner
> solution to do so.
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