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Handling of nested fields / object type #32

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Handling of nested fields / object type #32

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5 changes: 5 additions & 0 deletions core/src/main/java/org/opensearch/sql/calcite/utils/OpenSearchTypeFactory.java
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Original file line number Diff line number Diff line change
Expand Up @@ -323,6 +323,11 @@ public static RelDataType convertSchema(Table table) {
//reason: We don't need metadata fields in the substrait plan
// fieldTypes.putAll(table.getReservedFieldTypes());
for (Entry<String, ExprType> entry : fieldTypes.entrySet()) {
// Skip STRUCT type fields (object fields) as they cannot be queried directly
// Only their nested fields (which are already flattened) should be in the schema
if (entry.getValue() == ExprCoreType.STRUCT) {
continue;
}
fieldNameList.add(entry.getKey());
typeList.add(OpenSearchTypeFactory.convertExprTypeToRelDataType(entry.getValue()));
}
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