public abstract static class JdbcIO.ReadWithPartitions<T,PartitionColumnT> extends PTransform<PBegin,PCollection<T>>
JdbcIO.readWithPartitions(org.apache.beam.sdk.values.TypeDescriptor<PartitionColumnT>)
.annotations, displayData, name, resourceHints
Constructor and Description |
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ReadWithPartitions() |
Modifier and Type | Method and Description |
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PCollection<T> |
expand(PBegin input)
Override this method to specify how this
PTransform should be expanded on the given
InputT . |
void |
populateDisplayData(DisplayData.Builder builder)
Register display data for the given transform or component.
|
JdbcIO.ReadWithPartitions<T,PartitionColumnT> |
withCoder(Coder<T> coder)
Deprecated.
|
JdbcIO.ReadWithPartitions<T,PartitionColumnT> |
withDataSourceConfiguration(JdbcIO.DataSourceConfiguration config) |
JdbcIO.ReadWithPartitions<T,PartitionColumnT> |
withDataSourceProviderFn(SerializableFunction<java.lang.Void,javax.sql.DataSource> dataSourceProviderFn) |
JdbcIO.ReadWithPartitions<T,PartitionColumnT> |
withFetchSize(int fetchSize)
The number of rows to fetch from the database in the same
ResultSet round-trip. |
JdbcIO.ReadWithPartitions<T,PartitionColumnT> |
withLowerBound(PartitionColumnT lowerBound) |
JdbcIO.ReadWithPartitions<T,PartitionColumnT> |
withNumPartitions(int numPartitions)
The number of partitions.
|
JdbcIO.ReadWithPartitions<T,PartitionColumnT> |
withPartitionColumn(java.lang.String partitionColumn)
The name of a column of numeric type that will be used for partitioning.
|
JdbcIO.ReadWithPartitions<T,PartitionColumnT> |
withRowMapper(JdbcIO.RowMapper<T> rowMapper) |
JdbcIO.ReadWithPartitions<T,PartitionColumnT> |
withRowOutput()
Data output type is
Row , and schema is auto-inferred from the database. |
JdbcIO.ReadWithPartitions<T,PartitionColumnT> |
withTable(java.lang.String tableName)
Name of the table in the external database.
|
JdbcIO.ReadWithPartitions<T,PartitionColumnT> |
withUpperBound(PartitionColumnT upperBound) |
addAnnotation, compose, compose, getAdditionalInputs, getAnnotations, getDefaultOutputCoder, getDefaultOutputCoder, getDefaultOutputCoder, getKindString, getName, getResourceHints, setDisplayData, setResourceHints, toString, validate, validate
public JdbcIO.ReadWithPartitions<T,PartitionColumnT> withDataSourceConfiguration(JdbcIO.DataSourceConfiguration config)
public JdbcIO.ReadWithPartitions<T,PartitionColumnT> withDataSourceProviderFn(SerializableFunction<java.lang.Void,javax.sql.DataSource> dataSourceProviderFn)
public JdbcIO.ReadWithPartitions<T,PartitionColumnT> withRowMapper(JdbcIO.RowMapper<T> rowMapper)
@Deprecated public JdbcIO.ReadWithPartitions<T,PartitionColumnT> withCoder(Coder<T> coder)
JdbcIO
is able to infer appropriate coders from other parameters.
public JdbcIO.ReadWithPartitions<T,PartitionColumnT> withNumPartitions(int numPartitions)
public JdbcIO.ReadWithPartitions<T,PartitionColumnT> withPartitionColumn(java.lang.String partitionColumn)
public JdbcIO.ReadWithPartitions<T,PartitionColumnT> withFetchSize(int fetchSize)
ResultSet
round-trip.public JdbcIO.ReadWithPartitions<T,PartitionColumnT> withRowOutput()
Row
, and schema is auto-inferred from the database.public JdbcIO.ReadWithPartitions<T,PartitionColumnT> withLowerBound(PartitionColumnT lowerBound)
public JdbcIO.ReadWithPartitions<T,PartitionColumnT> withUpperBound(PartitionColumnT upperBound)
public JdbcIO.ReadWithPartitions<T,PartitionColumnT> withTable(java.lang.String tableName)
public PCollection<T> expand(PBegin input)
PTransform
PTransform
should be expanded on the given
InputT
.
NOTE: This method should not be called directly. Instead apply the PTransform
should
be applied to the InputT
using the apply
method.
Composite transforms, which are defined in terms of other transforms, should return the output of one of the composed transforms. Non-composite transforms, which do not apply any transforms internally, should return a new unbound output and register evaluators (via backend-specific registration methods).
expand
in class PTransform<PBegin,PCollection<T>>
public void populateDisplayData(DisplayData.Builder builder)
PTransform
populateDisplayData(DisplayData.Builder)
is invoked by Pipeline runners to collect
display data via DisplayData.from(HasDisplayData)
. Implementations may call super.populateDisplayData(builder)
in order to register display data in the current namespace,
but should otherwise use subcomponent.populateDisplayData(builder)
to use the namespace
of the subcomponent.
By default, does not register any display data. Implementors may override this method to provide their own display data.
populateDisplayData
in interface HasDisplayData
populateDisplayData
in class PTransform<PBegin,PCollection<T>>
builder
- The builder to populate with display data.HasDisplayData