I am porting an application from Lucene to Solr which makes use of spatial4j
for distance searches. The Lucene version works correctly but I am having a
problem getting the Solr version to work in the same way.
Lucene version:
SpatialContext geoSpatialCtx = SpatialContext.GEO;
geoSpatialStrategy = new RecursivePrefixTreeStrategy(new
GeohashPrefixTree(
geoSpatialCtx, GeohashPrefixTree.getMaxLevelsPossible()),
DocumentFieldNames.LOCATION);
Point point = geoSpatialCtx.makePoint(lon, lat);
for (IndexableField field :
geoSpatialStrategy.createIndexableFields(point)) {
document.add(field);
}
//Store the field
document.add(new StoredField(geoSpatialStrategy.getFieldName(),
geoSpatialCtx.toString(point)));
Solr version:
Point point = geoSpatialCtx.makePoint(lon, lat);
for (IndexableField field :
geoSpatialStrategy.createIndexableFields(point)) {
try {
solrDocument.addField(field.name(),
field.tokenStream(analyzer));
} catch (IOException e) {
LOGGER.error("Failed to add geo field to Solr index", e);
}
}
// Store the field
solrDocument.addField(geoSpatialStrategy.getFieldName(),
geoSpatialCtx.toString(point));
The server-side error is as follows:
Caused by: com.spatial4j.core.exception.InvalidShapeException: Unable to read:
org.apache.lucene.spatial.prefix.PrefixTreeStrategy$CellTokenStr\
eam@0
at
com.spatial4j.core.io.ShapeReadWriter.readShape(ShapeReadWriter.java:48)
at
com.spatial4j.core.context.SpatialContext.readShape(SpatialContext.java:195)
at
org.apache.solr.schema.AbstractSpatialFieldType.parseShape(AbstractSpatialFieldType.java:142)
I've seen David Smiley's sample code, specifically the class,
SpatialDemoUpdateProcessorFactory, but I can't say that I was able to benefit
from it at all.
What I'm trying to do seems like it should be easy - just to index a point for
distance searching - but I'm obviously missing something.
Any ideas?
Thanks,
Jim
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