public class ForwardingResultSet extends ForwardingStructReader implements ResultSetForwarding implementation of ResultSet that forwards all calls to a delegate.
Implements
ResultSetConstructors
ForwardingResultSet(ResultSet delegate)
public ForwardingResultSet(ResultSet delegate)| Parameter | |
|---|---|
| Name | Description |
delegate | ResultSet |
ForwardingResultSet(Supplier<ResultSet> supplier)
public ForwardingResultSet(Supplier<ResultSet> supplier)| Parameter | |
|---|---|
| Name | Description |
supplier | com.google.common.base.Supplier<ResultSet> |
Methods
close()
public void close()Explicitly close the result set, releasing any associated resources. This must always be called
when disposing of a ResultSet before #next() has returned false or
raised an exception. Calling close() is also allowed if the result set has been fully
consumed, so a recommended practice is to unconditionally close the result set once it is done
with, typically using a try-with-resources construct.
getCurrentRowAsStruct()
public Struct getCurrentRowAsStruct()Creates an immutable version of the row that the result set is positioned over. This may
involve copying internal data structures, and so converting all rows to Struct objects
is generally more expensive than processing the ResultSet directly.
| Returns | |
|---|---|
| Type | Description |
Struct | |
getMetadata()
public ResultSetMetadata getMetadata()Returns the ResultSetMetadata for this ResultSet. This is method may only be called after calling ResultSet#next() at least once.
| Returns | |
|---|---|
| Type | Description |
ResultSetMetadata | |
getStats()
public ResultSetStats getStats()Returns the ResultSetStats for the query only if the query was executed in either the
PLAN or the PROFILE mode via the ReadContext#analyzeQuery(Statement,
com.google.cloud.spanner.ReadContext.QueryAnalyzeMode) method or for DML statements in ReadContext#executeQuery(Statement, QueryOption...). Attempts to call this method on a
ResultSet not obtained from analyzeQuery or executeQuery will return a
null ResultSetStats. This method must be called after #next() has
returned @{code false}. Calling it before that will result in null
ResultSetStats too.
| Returns | |
|---|---|
| Type | Description |
ResultSetStats | |
next()
public boolean next()Advances the result set to the next row, returning false if no such row exists. This method may block.
| Returns | |
|---|---|
| Type | Description |
boolean | |
| Exceptions | |
|---|---|
| Type | Description |
SpannerException | |