Package org.apache.lucene.benchmark.byTask.feeds

# Class ContentItemsSource

java.lang.Object
org.apache.lucene.benchmark.byTask.feeds.ContentItemsSource

All Implemented Interfaces:
  `Closeable`, `AutoCloseable`

Direct Known Subclasses:
  `ContentSource`, `FacetSource`

public abstract class ContentItemsSource extends Object implements Closeable
Base class for source of data for benchmarking

Keeps track of various statistics, such as how many data items were generated, size in bytes etc.

Supports the following configuration parameters:

- content.source.forever - specifies whether to generate items forever (default=true).
- content.source.verbose - specifies whether messages should be output by the content source (default=false).
- content.source.encoding - specifies which encoding to use when reading the files of that content source. Certain implementations may define a default value if this parameter is not specified. (default=null).
- content.source.log.step - specifies for how many items a message should be logged. If set to 0 it means no logging should occur. NOTE: if verbose is set to false, logging should not occur even if logStep is not 0 (default=0).

## Field Summary

Fields
Modifier and Type
Field
Description
`protected String`
`encoding`
`protected boolean`
`forever`
`protected int`
`logStep`
`protected boolean`
`verbose`

## Constructor Summary

Constructors
Constructor
Description
`ContentItemsSource()`

## Method Summary

Modifier and Type
Method
Description
`protected final void`
`addBytes(long numBytes)`
update count of bytes generated by this source
`protected final void`
`addItem()`
update count of items generated by this source
`abstract void`
`close()`
Called when reading from this content source is no longer required.
`protected final void`
`collectFiles(Path dir, ArrayList<Path> files)`
A convenience method for collecting all the files of a content source from a given directory.
`final long`
`getBytesCount()`
Returns the number of bytes generated since last reset.
`final Config`
`getConfig()`
`final int`
`getItemsCount()`
Returns the number of generated items since last reset.
`final long`
`getTotalBytesCount()`
Returns the total number of bytes that were generated by this source.
`final int`
`getTotalItemsCount()`
Returns the total number of generated items.
`void`
`printStatistics(String itemsName)`
`void`
`resetInputs()`
Resets the input for this content source, so that the test would behave as if it was just started, input-wise.
`void`
`setConfig(Config config)`
Sets the `Config` for this content source.
`protected final boolean`
`shouldLog()`
Returns true whether it's time to log a message (depending on verbose and the number of items generated).

### Methods inherited from class java.lang.Object

`clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait`

## Field Details

### forever

protected boolean forever

### logStep

protected int logStep

### verbose

protected boolean verbose

### encoding

protected String encoding

## Constructor Details

### ContentItemsSource

public ContentItemsSource()

## Method Details

### addBytes

protected final void addBytes(long numBytes)
update count of bytes generated by this source

### addItem

protected final void addItem()
update count of items generated by this source

### collectFiles

protected final void collectFiles(Path dir, ArrayList<Path> files) throws IOException
A convenience method for collecting all the files of a content source from a given directory. The collected `Path` instances are stored in the given `files`.

Throws:
  `IOException`

### shouldLog

protected final boolean shouldLog()
Returns true whether it's time to log a message (depending on verbose and the number of items generated).

### close

public abstract void close() throws IOException
Called when reading from this content source is no longer required.

Specified by:
  `close` in interface `AutoCloseable`
Specified by:
  `close` in interface `Closeable`
Throws:
  `IOException`

### getBytesCount

public final long getBytesCount()
Returns the number of bytes generated since last reset.

### getItemsCount

public final int getItemsCount()
Returns the number of generated items since last reset.

### getConfig

public final Config getConfig()

### getTotalBytesCount

public final long getTotalBytesCount()
Returns the total number of bytes that were generated by this source.

### getTotalItemsCount

public final int getTotalItemsCount()
Returns the total number of generated items.

### resetInputs

public void resetInputs() throws IOException
Resets the input for this content source, so that the test would behave as if it was just started, input-wise.

NOTE: the default implementation resets the number of bytes and items generated since the last reset, so it's important to call super.resetInputs in case you override this method.

Throws:
  `IOException`

### setConfig

public void setConfig(Config config)
Sets the `Config` for this content source. If you override this method, you must call super.setConfig.

### printStatistics

public void printStatistics(String itemsName)