Examples with BatchSourceTransform com.hazelcast.jet.impl.pipeline.transform.BatchSourceTransform used on opensource projects

Example 1 with BatchSourceTransform

use of com.hazelcast.jet.impl.pipeline.transform.BatchSourceTransform in project hazelcast by hazelcast.

the class SeriesSqlConnector method fullScanReader.

@Nonnull
@Override
public Vertex fullScanReader(@Nonnull DAG dag, @Nonnull Table table0, @Nullable Expression<Boolean> predicate, @Nonnull List<Expression<?>> projections, @Nullable FunctionEx<ExpressionEvalContext, EventTimePolicy<JetSqlRow>> eventTimePolicyProvider) {
    if (eventTimePolicyProvider != null) {
        throw QueryException.error("Ordering functions are not supported on top of " + TYPE_NAME + " mappings");
    }
    SeriesTable table = (SeriesTable) table0;
    BatchSource<JetSqlRow> source = table.items(predicate, projections);
    ProcessorMetaSupplier pms = ((BatchSourceTransform<JetSqlRow>) source).metaSupplier;
    return dag.newUniqueVertex(table.toString(), pms);
}

Example 2 with BatchSourceTransform

use of com.hazelcast.jet.impl.pipeline.transform.BatchSourceTransform in project hazelcast by hazelcast.

the class TestAllTypesSqlConnector method fullScanReader.

@Nonnull
@Override
public Vertex fullScanReader(@Nonnull DAG dag, @Nonnull Table table, @Nullable Expression<Boolean> predicate, @Nonnull List<Expression<?>> projection, @Nullable FunctionEx<ExpressionEvalContext, EventTimePolicy<JetSqlRow>> eventTimePolicyProvider) {
    if (eventTimePolicyProvider != null) {
        throw QueryException.error("Ordering function are not supported for " + TYPE_NAME + " mappings");
    }
    BatchSource<JetSqlRow> source = SourceBuilder.batch("batch", ExpressionEvalContext::from).<JetSqlRow>fillBufferFn((ctx, buf) -> {
        JetSqlRow row = ExpressionUtil.evaluate(predicate, projection, VALUES, ctx);
        if (row != null) {
            buf.add(row);
        }
        buf.close();
    }).build();
    ProcessorMetaSupplier pms = ((BatchSourceTransform<JetSqlRow>) source).metaSupplier;
    return dag.newUniqueVertex(table.toString(), pms);
}