oracle.pgx.api.frames

Class PgxFrame

java.lang.Object

oracle.pgx.api.frames.PgxFrame

All Implemented Interfaces:

java.lang.AutoCloseable

public abstract class PgxFrame
extends java.lang.Object
implements java.lang.AutoCloseable

Constructor Summary

Constructors

Constructor and Description
PgxFrame()

Method Summary

Modifier and Type	Method and Description
void	close() Calls destroyAsync() and wait for completion.
long	count() Gives the numbers of rows in a frame.
abstract PgxFuture<java.lang.Long>	countAsync() Gives the numbers of rows in a frame
void	destroy() Blocking version of destroyAsync().
abstract PgxFuture<java.lang.Void>	destroyAsync() Requests destruction of this object.
PgxFrame	flatten(java.lang.String... columns) Create a new PgxFrame with all the specified columns and vector columns flattened into multiple columns.
PgxFrame	flattenAll() Create a new PgxFrame with all nested columns and vector columns flattened into multiple columns.
PgxFuture<PgxFrame>	flattenAllAsync() Create a new PgxFrame with all nested columns and vector columns flattened into multiple columns.
PgxFrame	flattenAllInPlace() Modifies the PgxFrame by flattening all nested columns and vector columns into multiple columns.
PgxFuture<PgxFrame>	flattenAllInPlaceAsync() Modifies the PgxFrame by flattening all nested columns and vector columns into multiple columns.
PgxFuture<PgxFrame>	flattenAsync(java.lang.String... columns) Create a new PgxFrame with the specified nested columns and vector columns flattened into multiple columns.
PgxFrame	flattenInPlace(java.lang.String... columns) Modifies the PgxFrame by flattening all the specified columns and vector columns into multiple columns.
PgxFuture<PgxFrame>	flattenInPlaceAsync(java.lang.String... columns) Modifies the PgxFrame by flattening all the specified columns and vector columns into multiple columns.
abstract PgxFrameColumn	getColumn(java.lang.String columnName) Returns the column of the frame that has the given name
ColumnDescriptor[]	getColumnDescriptors() Returns a list containing the description of the different columns of the frames.
PgxFrame	head() Extracts the headInPlace(long) first rows of the frame and put them in a new frame Blocking version of head(long).
PgxFrame	head(long numRows) Extracts the numRows first rows of the frame and put them in a new frame Blocking version of head(long).
PgxFuture<PgxFrame>	headAsync() Extracts the headInPlace(long) first rows of the frame and put them in a new frame
PgxFuture<PgxFrame>	headAsync(long numRows) Extracts the numRows first rows of the frame and put them in a new frame
PgxFrame	headInPlace() Keeps only the first DEFAULT_LIMIT rows in the frame Blocking version of headInPlace().
PgxFrame	headInPlace(long numRows) Keeps only the first numRows rows in the frame Blocking version of headInPlace(long).
PgxFuture<PgxFrame>	headInPlaceAsync() Modifies the frame to only keep the first headInPlace(long) rows in the frame
PgxFuture<PgxFrame>	headInPlaceAsync(long numRows) Modifies the frame to only keep the first numRows rows in the frame
PgxFrame	join(PgxFrame right, java.lang.String joinKeyColumn) Creates a new PgxFrame by adding the columns of the right frame to this frame aligned on equality of entries in column joinKeyColumn.
PgxFrame	join(PgxFrame right, java.lang.String leftJoinKeyColumn, java.lang.String rightJoinKeyColumn) Creates a new PgxFrame by adding the columns of the right frame to this frame aligned on equality of entries in column leftJoinKeyColumn for this frame and column rightJoinKeyColumn for the right frame.
PgxFrame	join(PgxFrame right, java.lang.String joinKeyColumn, java.lang.String leftPrefix, java.lang.String rightPrefix) Creates a new PgxFrame by adding the columns of the right frame to this frame, aligned on equality of entries in column leftJoinKeyColumn for this frame and column rightJoinKeyColumn for the right frame.
PgxFrame	join(PgxFrame right, java.lang.String leftJoinKeyColumn, java.lang.String rightJoinKeyColumn, java.lang.String leftPrefix, java.lang.String rightPrefix) Creates a new PgxFrame by adding the columns of the right frame to this frame, aligned on equality of entries in column leftJoinKeyColumn for this frame and column rightJoinKeyColumn for the right frame.
long	length() Gives the numbers of rows in a frame Blocking version of lengthAsync().
PgxFuture<java.lang.Long>	lengthAsync() Gives the numbers of rows in a frame.
PgxFrame	print() Prints all results to System.out.
PgxFrame	print(long numRows) Prints numRows results to System.out.
PgxFrame	print(long numResults, long from) Prints numResults results from the frame to System.out.
PgxFrame	print(java.io.PrintStream printStream, long numResults, long from) Prints the content of the frame Blocking version of printAsync(PrintStream, long, long).
PgxFuture<PgxFrame>	printAsync() Prints all results to System.out.
PgxFuture<PgxFrame>	printAsync(long numRows) Prints numRows results to System.out.
PgxFuture<PgxFrame>	printAsync(long numResults, long from) Prints numResults results from the frame to System.out.
PgxFuture<PgxFrame>	printAsync(java.io.PrintStream printStream, long numResults, long from) Prints the content of the frame
PgxFrame	renameColumn(java.lang.String oldColumnName, java.lang.String newColumnName) Returns a new PgxFrame in which the specified column is renamed as specified Blocking version of renameColumnAsync(String, String).
PgxFuture<PgxFrame>	renameColumnAsync(java.lang.String oldColumnName, java.lang.String newColumnName) Returns a new PgxFrame in which the specified column is renamed as specified
PgxFrame	renameColumnInPlace(java.lang.String oldColumnName, java.lang.String newColumnName) Modifies the PgxFrame by renaming the specified column is renamed as specified Blocking version of renameColumnInPlaceAsync(String, String).
PgxFuture<PgxFrame>	renameColumnInPlaceAsync(java.lang.String oldColumnName, java.lang.String newColumnName) Modifies the PgxFrame by renaming the specified column is renamed as specified
PgxFrame	renameColumns(ColumnRenaming... columnsWithRenamings) Returns a new PgxFrame in which the specified columns are renamed as specified Blocking version of renameColumnsAsync(ColumnRenaming...).
PgxFuture<PgxFrame>	renameColumnsAsync(ColumnRenaming... columnsWithRenamings) Returns a new PgxFrame in which the specified columns are renamed as specified
PgxFrame	renameColumnsInPlace(ColumnRenaming... columnsWithRenamings) Modifies the PgxFrame to rename the specified columns as specified Blocking version of renameColumnsInPlaceAsync(ColumnRenaming...).
PgxFuture<PgxFrame>	renameColumnsInPlaceAsync(ColumnRenaming... columnsWithRenamings) Modifies the PgxFrame to rename the specified columns as specified
PgxFrame	select(java.lang.String... columns) Returns a new PgxFrame that contains only the specified columns Blocking version of selectAsync(String...).
PgxFuture<PgxFrame>	selectAsync(java.lang.String... columns) Returns a new PgxFrame that contains only the specified columns
PgxFrame	selectInPlace(java.lang.String... columns) Modifies the PgxFrame to contain only the specified columns Blocking version of selectInPlaceAsync(String...).
PgxFuture<PgxFrame>	selectInPlaceAsync(java.lang.String... columns) Modifies the PgxFrame to contain only the specified columns
PgxFrame	tail() Extracts the last DEFAULT_LIMIT rows of the frame into a new frame.
PgxFrame	tail(long numRows) Extracts the numRows last rows of the frame and put them in a new frame
PgxFuture<PgxFrame>	tailAsync() Extracts the last DEFAULT_LIMIT rows of the frame and put them in a new frame
PgxFuture<PgxFrame>	tailAsync(long numRows) Extracts the numRows last rows of the frame and put them in a new frame
PgxFrame	tailInPlace() Modifies the frame to keep the last DEFAULT_LIMIT rows of the frame.
PgxFrame	tailInPlace(long numRows) Modifies the frame to keep the last DEFAULT_LIMIT rows of the frame.
PgxFuture<PgxFrame>	tailInPlaceAsync() Modifies the frame to keep the last DEFAULT_LIMIT rows of the frame
PgxFuture<PgxFrame>	tailInPlaceAsync(long numRows) Modifies the frame to keep the last numRows rows of the frame
PgqlResultSet	toPgqlResultSet() Creates a new PgqlResultSet having the same content as this frame.
abstract PgxFuture<PgqlResultSet>	toPgqlResultSetAsync() Creates a new PgqlResultSet having the same content as this frame.
PgxFrame	union(PgxFrame b, PgxFrame... others) Creates a new PgxFrame by concatenating the rows of this frame with the rows of b and others.
abstract PgxGenericFrameStorer	write() Returns a PgxGenericFrameStorer to configure the storing operation and then trigger it.

Methods inherited from class java.lang.Object

equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

PgxFrame

public PgxFrame()

Method Detail

close

public void close()

Calls destroyAsync() and wait for completion.

Specified by:

close in interface java.lang.AutoCloseable

count

public long count()
           throws java.lang.InterruptedException,
                  java.util.concurrent.ExecutionException

Gives the numbers of rows in a frame. Blocking version of countAsync(). Calls countAsync() and waits for the returned PgxFuture to complete.

Returns:

the number of rows in the frame

Throws:

java.lang.InterruptedException

java.util.concurrent.ExecutionException

countAsync

public abstract PgxFuture<java.lang.Long> countAsync()

Gives the numbers of rows in a frame

Returns:

a future on the number of rows in the frame

destroy

public void destroy()
             throws java.lang.InterruptedException,
                    java.util.concurrent.ExecutionException

Blocking version of destroyAsync(). Calls destroyAsync() and waits for the returned PgxFuture to complete.

Throws:

java.lang.InterruptedException - if the caller thread gets interrupted while waiting for completion.

java.util.concurrent.ExecutionException - if any exception occurred during asynchronous execution. The actual exception will be nested.

destroyAsync

public abstract PgxFuture<java.lang.Void> destroyAsync()

Requests destruction of this object. After this method returns, the behavior of any method of this class becomes undefined.

Returns:

a future which will be completed once the destruction request finishes.

flatten

public PgxFrame flatten(java.lang.String... columns)
                 throws java.lang.InterruptedException,
                        java.util.concurrent.ExecutionException

Create a new PgxFrame with all the specified columns and vector columns flattened into multiple columns. Blocking version of flattenAllAsync(). Calls flattenAllAsync() and waits for the returned PgxFuture to complete.

Returns:

a new frame with the columns flattened

Throws:

java.lang.InterruptedException

java.util.concurrent.ExecutionException

flattenAll

public PgxFrame flattenAll()
                    throws java.lang.InterruptedException,
                           java.util.concurrent.ExecutionException

Create a new PgxFrame with all nested columns and vector columns flattened into multiple columns. Blocking version of flattenAllAsync(). Calls flattenAllAsync() and waits for the returned PgxFuture to complete.

Returns:

a new frame with the columns flattened

Throws:

java.lang.InterruptedException

java.util.concurrent.ExecutionException

flattenAllAsync

public PgxFuture<PgxFrame> flattenAllAsync()

Create a new PgxFrame with all nested columns and vector columns flattened into multiple columns.

Returns:

the future on the new frame with the columns flattened

flattenAllInPlace

public PgxFrame flattenAllInPlace()
                           throws java.lang.InterruptedException,
                                  java.util.concurrent.ExecutionException

Modifies the PgxFrame by flattening all nested columns and vector columns into multiple columns. Blocking version of flattenAllInPlaceAsync(). Calls flattenAllInPlaceAsync() and waits for the returned PgxFuture to complete.

Returns:

the frame with the columns flattened

Throws:

java.lang.InterruptedException

java.util.concurrent.ExecutionException

flattenAllInPlaceAsync

public PgxFuture<PgxFrame> flattenAllInPlaceAsync()

Modifies the PgxFrame by flattening all nested columns and vector columns into multiple columns.

Returns:

the future on the frame with the columns flattened

flattenAsync

public PgxFuture<PgxFrame> flattenAsync(java.lang.String... columns)

Create a new PgxFrame with the specified nested columns and vector columns flattened into multiple columns.

Returns:

the future on the new frame with the columns flattened

flattenInPlace

public PgxFrame flattenInPlace(java.lang.String... columns)
                        throws java.lang.InterruptedException,
                               java.util.concurrent.ExecutionException

Modifies the PgxFrame by flattening all the specified columns and vector columns into multiple columns. Blocking version of flattenAllInPlaceAsync(). Calls flattenAllInPlaceAsync() and waits for the returned PgxFuture to complete.

Returns:

the frame with the columns flattened

Throws:

java.lang.InterruptedException

java.util.concurrent.ExecutionException

flattenInPlaceAsync

public PgxFuture<PgxFrame> flattenInPlaceAsync(java.lang.String... columns)

Modifies the PgxFrame by flattening all the specified columns and vector columns into multiple columns.

Returns:

the future on the frame with the columns flattened

getColumn

public abstract PgxFrameColumn getColumn(java.lang.String columnName)

Returns the column of the frame that has the given name

Parameters:

columnName - the name of the column to get back

Returns:

a handle on the column of the frame with the given name

getColumnDescriptors

public ColumnDescriptor[] getColumnDescriptors()

Returns a list containing the description of the different columns of the frames.

Returns:

a list of column descriptions

head

public PgxFrame head()
              throws java.lang.InterruptedException,
                     java.util.concurrent.ExecutionException

Extracts the headInPlace(long) first rows of the frame and put them in a new frame Blocking version of head(long). Calls head(long) and waits for the returned PgxFuture to complete.

Returns:

the frame that contains the top rows

Throws:

java.lang.InterruptedException

java.util.concurrent.ExecutionException

head

public PgxFrame head(long numRows)
              throws java.lang.InterruptedException,
                     java.util.concurrent.ExecutionException

Extracts the numRows first rows of the frame and put them in a new frame Blocking version of head(long). Calls head(long) and waits for the returned PgxFuture to complete.

Parameters:

numRows - the number of rows to extract from the top

Returns:

the frame that contains the top rows

Throws:

java.lang.InterruptedException

java.util.concurrent.ExecutionException

headAsync

public PgxFuture<PgxFrame> headAsync()

Extracts the headInPlace(long) first rows of the frame and put them in a new frame

Returns:

a future on the frame that contains the top rows

headAsync

public PgxFuture<PgxFrame> headAsync(long numRows)

Extracts the numRows first rows of the frame and put them in a new frame

Parameters:

numRows - the number of rows to extract from the top

Returns:

a future on the frame that contains the top rows

headInPlace

public PgxFrame headInPlace()
                     throws java.lang.InterruptedException,
                            java.util.concurrent.ExecutionException

Keeps only the first DEFAULT_LIMIT rows in the frame Blocking version of headInPlace(). Calls headInPlace() and waits for the returned PgxFuture to complete.

Returns:

this frame, after modification

Throws:

java.lang.InterruptedException

java.util.concurrent.ExecutionException

headInPlace

public PgxFrame headInPlace(long numRows)
                     throws java.lang.InterruptedException,
                            java.util.concurrent.ExecutionException

Keeps only the first numRows rows in the frame Blocking version of headInPlace(long). Calls headInPlace(long) and waits for the returned PgxFuture to complete.

Parameters:

numRows - the number of rows to keep from the top

Returns:

this frame, after modification

Throws:

java.lang.InterruptedException

java.util.concurrent.ExecutionException

headInPlaceAsync

public PgxFuture<PgxFrame> headInPlaceAsync()

Modifies the frame to only keep the first headInPlace(long) rows in the frame

Returns:

a future on the from that contains the top rows

headInPlaceAsync

public PgxFuture<PgxFrame> headInPlaceAsync(long numRows)

Modifies the frame to only keep the first numRows rows in the frame

Parameters:

numRows - the number of rows to keep from the top

Returns:

a future on the from that contains the top rows

join

public PgxFrame join(PgxFrame right,
                     java.lang.String joinKeyColumn)
              throws java.lang.InterruptedException,
                     java.util.concurrent.ExecutionException

Creates a new PgxFrame by adding the columns of the right frame to this frame aligned on equality of entries in column joinKeyColumn. The resulting frame will contain the columns of this frame and the columns of right frame without any prefixes. For different prefixes, use join(PgxFrame, String, String, String, String) Blocking version of joinAsync(PgxFrame, String). Calls joinAsync(PgxFrame, String) and waits for the returned PgxFuture to complete

Parameters:

right - PgxFrame whose columns will be added to the columns of this PgxFrame

joinKeyColumn - Column on which the equality test will be performed in order to align the rows between the two frames

Returns:

PgxFrame containing the columns of this frame and right frame aligned based on equality of column joinKeyColumn

Throws:

java.lang.InterruptedException

java.util.concurrent.ExecutionException

join

public PgxFrame join(PgxFrame right,
                     java.lang.String leftJoinKeyColumn,
                     java.lang.String rightJoinKeyColumn)
              throws java.lang.InterruptedException,
                     java.util.concurrent.ExecutionException

Creates a new PgxFrame by adding the columns of the right frame to this frame aligned on equality of entries in column leftJoinKeyColumn for this frame and column rightJoinKeyColumn for the right frame. The resulting frame will contain the columns of this frame and the columns of right frame without any prefixes. For different prefixes, use join(PgxFrame, String, String, String, String) Blocking version of joinAsync(PgxFrame, String, String). Calls join(PgxFrame, String, String) and waits for the returned PgxFuture to complete

Parameters:

right - PgxFrame whose columns will be added to the columns of this PgxFrame

leftJoinKeyColumn - Column of this frame on which the equality test will be performed with rightJoinKeyColumn

rightJoinKeyColumn - Column of right frame on which the equality test will be performed with leftJoinKeyColumn

Returns:

PgxFrame containing the columns of this frame and right frame aligned based on equality of columns leftJoinKeyColumn and rightJoinKeyColumn

Throws:

java.lang.InterruptedException

java.util.concurrent.ExecutionException

join

public PgxFrame join(PgxFrame right,
                     java.lang.String joinKeyColumn,
                     java.lang.String leftPrefix,
                     java.lang.String rightPrefix)
              throws java.lang.InterruptedException,
                     java.util.concurrent.ExecutionException

Creates a new PgxFrame by adding the columns of the right frame to this frame, aligned on equality of entries in column leftJoinKeyColumn for this frame and column rightJoinKeyColumn for the right frame. The resulting frame will contain the columns of this frame prefixed by leftPrefix and the columns of right frame prefixed by rightPrefix (if the prefixes are not null). Blocking version of joinAsync(PgxFrame, String, String, String). Calls join(PgxFrame, String, String, String) and waits for the returned PgxFuture to complete

Parameters:

right - PgxFrame whose columns will be added to the columns of this PgxFrame

joinKeyColumn - Column of this and right on which the equality test will be performed

leftPrefix - Prefix of the columns name of this frame in the resulting frame

rightPrefix - Prefix of the columns name of right frame in the resulting frame

Returns:

PgxFrame containing the columns of this frame and right frame aligned based on equality of column joinKeyColumn

Throws:

java.lang.InterruptedException

java.util.concurrent.ExecutionException

join

public PgxFrame join(PgxFrame right,
                     java.lang.String leftJoinKeyColumn,
                     java.lang.String rightJoinKeyColumn,
                     java.lang.String leftPrefix,
                     java.lang.String rightPrefix)
              throws java.lang.InterruptedException,
                     java.util.concurrent.ExecutionException

Creates a new PgxFrame by adding the columns of the right frame to this frame, aligned on equality of entries in column leftJoinKeyColumn for this frame and column rightJoinKeyColumn for the right frame. The resulting frame will contain the columns of this frame prefixed by leftPrefix and the columns of right frame prefixed by rightPrefix (if the prefixes are not null). Blocking version of joinAsync(PgxFrame, String, String, String, String). Calls join(PgxFrame, String, String, String, String) and waits for the returned PgxFuture to complete

Parameters:

right - PgxFrame whose columns will be added to the columns of this PgxFrame

leftJoinKeyColumn - Column of this frame on which the equality test will be performed with rightJoinKeyColumn

rightJoinKeyColumn - Column of right frame on which the equality test will be performed with leftJoinKeyColumn

leftPrefix - Prefix of the columns name of this frame in the resulting frame

rightPrefix - Prefix of the columns name of right frame in the resulting frame

Returns:

PgxFrame containing the columns of this frame and right frame aligned based on equality of columns leftJoinKeyColumn and rightJoinKeyColumn

Throws:

java.lang.InterruptedException

java.util.concurrent.ExecutionException

length

public long length()
            throws java.lang.InterruptedException,
                   java.util.concurrent.ExecutionException

Gives the numbers of rows in a frame Blocking version of lengthAsync(). Calls lengthAsync() and waits for the returned PgxFuture to complete.

Returns:

the number of rows in the frame

Throws:

java.lang.InterruptedException

java.util.concurrent.ExecutionException

lengthAsync

public PgxFuture<java.lang.Long> lengthAsync()

Gives the numbers of rows in a frame.

Returns:

a future on the number of rows in the frame

print

public PgxFrame print()
               throws java.lang.InterruptedException,
                      java.util.concurrent.ExecutionException

Prints all results to System.out. Blocking version of printAsync(). Calls printAsync() and waits for the returned PgxFuture to complete.

Returns:

the original frame

Throws:

java.lang.InterruptedException

java.util.concurrent.ExecutionException

print

public PgxFrame print(long numRows)
               throws java.lang.InterruptedException,
                      java.util.concurrent.ExecutionException

Prints numRows results to System.out. If numRows is larger than the number of rows in the frame, only as many rows as in the frame are printed. Blocking version of printAsync(long). Calls printAsync(long) and waits for the returned PgxFuture to complete.

Parameters:

numRows - number of result

Returns:

the original frame

Throws:

java.lang.InterruptedException

java.util.concurrent.ExecutionException

print

public PgxFrame print(long numResults,
                      long from)
               throws java.lang.InterruptedException,
                      java.util.concurrent.ExecutionException

Prints numResults results from the frame to System.out. Blocking version of printAsync(long, long). Calls printAsync(long, long) and waits for the returned PgxFuture to complete.

Parameters:

numResults - number of result

from - first result to be printed (start counting from 0)

Returns:

the original frame

Throws:

java.lang.InterruptedException

java.util.concurrent.ExecutionException

print

public PgxFrame print(java.io.PrintStream printStream,
                      long numResults,
                      long from)
               throws java.lang.InterruptedException,
                      java.util.concurrent.ExecutionException

Prints the content of the frame Blocking version of printAsync(PrintStream, long, long). Calls printAsync(PrintStream, long, long) and waits for the returned PgxFuture to complete.

Returns:

the original frame

Throws:

java.lang.InterruptedException

java.util.concurrent.ExecutionException

printAsync

public PgxFuture<PgxFrame> printAsync()

Prints all results to System.out.

Returns:

a future on the original frame, completed once the printing has been done

printAsync

public PgxFuture<PgxFrame> printAsync(long numRows)

Prints numRows results to System.out. If numRows is larger than the number of rows in the frame, only as many rows as in the frame are printed.

Parameters:

numRows - number of result

Returns:

a future on the original frame, completed once the printing has been done

printAsync

public PgxFuture<PgxFrame> printAsync(long numResults,
                                      long from)

Prints numResults results from the frame to System.out.

Parameters:

numResults - number of result

from - first result to be printed (start counting from 0)

Returns:

a future on the original frame, completed once the printing has been done

printAsync

public PgxFuture<PgxFrame> printAsync(java.io.PrintStream printStream,
                                      long numResults,
                                      long from)

Prints the content of the frame

Returns:

a future on the original frame, completed once the printing has been done

renameColumn

public PgxFrame renameColumn(java.lang.String oldColumnName,
                             java.lang.String newColumnName)
                      throws java.lang.InterruptedException,
                             java.util.concurrent.ExecutionException

Returns a new PgxFrame in which the specified column is renamed as specified Blocking version of renameColumnAsync(String, String). Calls renameColumnAsync(String, String) and waits for the returned PgxFuture to complete.

Parameters:

oldColumnName - the name of the column to rename

newColumnName - the name of the column in the new frame

Returns:

a new PgxFrame with all the columns of the original frame renamed for the one that has to be

Throws:

java.lang.InterruptedException

java.util.concurrent.ExecutionException

renameColumnAsync

public PgxFuture<PgxFrame> renameColumnAsync(java.lang.String oldColumnName,
                                             java.lang.String newColumnName)

Returns a new PgxFrame in which the specified column is renamed as specified

Parameters:

oldColumnName - the name of the column to rename

newColumnName - the name of the column in the new frame

Returns:

a future on the new PgxFrame

renameColumnInPlace

public PgxFrame renameColumnInPlace(java.lang.String oldColumnName,
                                    java.lang.String newColumnName)
                             throws java.lang.InterruptedException,
                                    java.util.concurrent.ExecutionException

Modifies the PgxFrame by renaming the specified column is renamed as specified Blocking version of renameColumnInPlaceAsync(String, String). Calls renameColumnInPlaceAsync(String, String) and waits for the returned PgxFuture to complete.

Parameters:

oldColumnName - the name of the column to rename

newColumnName - the name of the column in the new frame

Returns:

the PgxFrame with all the columns of the original frame renamed for the one that has to be

Throws:

java.lang.InterruptedException

java.util.concurrent.ExecutionException

renameColumnInPlaceAsync

public PgxFuture<PgxFrame> renameColumnInPlaceAsync(java.lang.String oldColumnName,
                                                    java.lang.String newColumnName)

Modifies the PgxFrame by renaming the specified column is renamed as specified

Parameters:

oldColumnName - the name of the column to rename

newColumnName - the name of the column in the new frame

Returns:

the future on the modified frame

renameColumns

public PgxFrame renameColumns(ColumnRenaming... columnsWithRenamings)
                       throws java.lang.InterruptedException,
                              java.util.concurrent.ExecutionException

Returns a new PgxFrame in which the specified columns are renamed as specified Blocking version of renameColumnsAsync(ColumnRenaming...). Calls renameColumnsAsync(ColumnRenaming...) and waits for the returned PgxFuture to complete.

Parameters:

columnsWithRenamings - the list of columns to rename and their new names

Returns:

a new PgxFrame with all the columns of the original frame renamed for the ones that have to be

Throws:

java.lang.InterruptedException

java.util.concurrent.ExecutionException

renameColumnsAsync

public PgxFuture<PgxFrame> renameColumnsAsync(ColumnRenaming... columnsWithRenamings)

Returns a new PgxFrame in which the specified columns are renamed as specified

Parameters:

columnsWithRenamings - the list of columns to rename and their new names

Returns:

a future on the new PgxFrame

renameColumnsInPlace

public PgxFrame renameColumnsInPlace(ColumnRenaming... columnsWithRenamings)
                              throws java.lang.InterruptedException,
                                     java.util.concurrent.ExecutionException

Modifies the PgxFrame to rename the specified columns as specified Blocking version of renameColumnsInPlaceAsync(ColumnRenaming...). Calls renameColumnsInPlaceAsync(ColumnRenaming...) and waits for the returned PgxFuture to complete.

Parameters:

columnsWithRenamings - the list of columns to rename and their new names

Returns:

the PgxFrame with all the columns of the original frame renamed for the ones that have to be

Throws:

java.lang.InterruptedException

java.util.concurrent.ExecutionException

renameColumnsInPlaceAsync

public PgxFuture<PgxFrame> renameColumnsInPlaceAsync(ColumnRenaming... columnsWithRenamings)

Modifies the PgxFrame to rename the specified columns as specified

Parameters:

columnsWithRenamings - the list of columns to rename and their new names

Returns:

a future on the modified PgxFrame

select

public PgxFrame select(java.lang.String... columns)
                throws java.lang.InterruptedException,
                       java.util.concurrent.ExecutionException

Returns a new PgxFrame that contains only the specified columns Blocking version of selectAsync(String...). Calls selectAsync(String...) and waits for the returned PgxFuture to complete.

Parameters:

columns - the list of columns to keep in the new PgxFrame

Returns:

a new PgxFrame with the specified columns

Throws:

java.lang.InterruptedException

java.util.concurrent.ExecutionException

selectAsync

public PgxFuture<PgxFrame> selectAsync(java.lang.String... columns)

Returns a new PgxFrame that contains only the specified columns

Parameters:

columns - the list of columns to keep in the new PgxFrame

Returns:

a future on the new PgxFrame with the specified columns

selectInPlace

public PgxFrame selectInPlace(java.lang.String... columns)
                       throws java.lang.InterruptedException,
                              java.util.concurrent.ExecutionException

Modifies the PgxFrame to contain only the specified columns Blocking version of selectInPlaceAsync(String...). Calls selectInPlaceAsync(String...) and waits for the returned PgxFuture to complete.

Parameters:

columns - the list of columns to keep in the new PgxFrame

Returns:

the modified PgxFrame with the specified columns

Throws:

java.lang.InterruptedException

java.util.concurrent.ExecutionException

selectInPlaceAsync

public PgxFuture<PgxFrame> selectInPlaceAsync(java.lang.String... columns)

Modifies the PgxFrame to contain only the specified columns

Parameters:

columns - the list of columns to keep in the new PgxFrame

Returns:

a future on the modified PgxFrame with the specified columns

tail

public PgxFrame tail()
              throws java.lang.InterruptedException,
                     java.util.concurrent.ExecutionException

Extracts the last DEFAULT_LIMIT rows of the frame into a new frame. Blocking version of tail(). Calls tailAsync() and waits for the returned PgxFuture to complete.

Returns:

the frame after modification

Throws:

java.lang.InterruptedException

java.util.concurrent.ExecutionException

tail

public PgxFrame tail(long numRows)
              throws java.lang.InterruptedException,
                     java.util.concurrent.ExecutionException

Extracts the numRows last rows of the frame and put them in a new frame

Parameters:

numRows - the number of rows to extract from the bottom

Returns:

the frame that contains the bottom rows

Throws:

java.lang.InterruptedException

java.util.concurrent.ExecutionException

tailAsync

public PgxFuture<PgxFrame> tailAsync()

Extracts the last DEFAULT_LIMIT rows of the frame and put them in a new frame

Returns:

a future on the frame that contains the bottom rows

tailAsync

public PgxFuture<PgxFrame> tailAsync(long numRows)

Extracts the numRows last rows of the frame and put them in a new frame

Parameters:

numRows - the number of rows to extract from the bottom

Returns:

a future on the frame that contains the bottom rows

tailInPlace

public PgxFrame tailInPlace()
                     throws java.lang.InterruptedException,
                            java.util.concurrent.ExecutionException

Modifies the frame to keep the last DEFAULT_LIMIT rows of the frame. Blocking version of tailInPlace(). Calls tailInPlaceAsync() and waits for the returned PgxFuture to complete.

Returns:

the frame after modification

Throws:

java.lang.InterruptedException

java.util.concurrent.ExecutionException

tailInPlace

public PgxFrame tailInPlace(long numRows)
                     throws java.lang.InterruptedException,
                            java.util.concurrent.ExecutionException

Modifies the frame to keep the last DEFAULT_LIMIT rows of the frame. Blocking version of tailInPlace(long). Calls tailInPlaceAsync(long) and waits for the returned PgxFuture to complete.

Parameters:

numRows - the number of rows to extract from the bottom

Returns:

the frame after modification

Throws:

java.lang.InterruptedException

java.util.concurrent.ExecutionException

tailInPlaceAsync

public PgxFuture<PgxFrame> tailInPlaceAsync()

Modifies the frame to keep the last DEFAULT_LIMIT rows of the frame

Returns:

a future on the frame after modification

tailInPlaceAsync

public PgxFuture<PgxFrame> tailInPlaceAsync(long numRows)

Modifies the frame to keep the last numRows rows of the frame

Parameters:

numRows - the number of rows to extract from the bottom

Returns:

a future on the frame after modification

toPgqlResultSet

public PgqlResultSet toPgqlResultSet()
                              throws java.lang.InterruptedException,
                                     java.util.concurrent.ExecutionException

Creates a new PgqlResultSet having the same content as this frame. The result set content is accessible as long as the frame is not destroyed. Blocking version of toPgqlResultSetAsync(). Calls toPgqlResultSetAsync() and waits for the returned PgxFuture to complete.

Returns:

a new PgqlResultSet having the same content as this frame.

Throws:

java.lang.InterruptedException

java.util.concurrent.ExecutionException

toPgqlResultSetAsync

public abstract PgxFuture<PgqlResultSet> toPgqlResultSetAsync()

Creates a new PgqlResultSet having the same content as this frame. The result set content is accessible as long as the frame is not destroyed or mutated in place.

Returns:

a new PgqlResultSet having the same content as this frame.

union

public PgxFrame union(PgxFrame b,
                      PgxFrame... others)
               throws java.lang.InterruptedException,
                      java.util.concurrent.ExecutionException

Creates a new PgxFrame by concatenating the rows of this frame with the rows of b and others. The different frames should have the same columns (same names, types and dimensions), in the same order. The resulting frame is not guaranteed to have any specific ordering of its rows. Blocking version of unionAsync(PgxFrame, PgxFrame...). Calls unionAsync(PgxFrame, PgxFrame...) and waits for the return PgxFuture to complete

Parameters:

b - PgxFrame whose rows to append the the rows of this PgxFrame

others - additional PgxFrames whose rows to append to the result frame

Returns:

PgxFrame containing the rows of this, b and others frames

Throws:

java.lang.InterruptedException

java.util.concurrent.ExecutionException

write

public abstract PgxGenericFrameStorer write()

Returns a PgxGenericFrameStorer to configure the storing operation and then trigger it.

Returns:

a PgxGenericFrameStorer to configure the storing