TextRowCountEstimator (Apache Beam 2.29.0)

```
public abstract class TextRowCountEstimator
extends java.lang.Object
```
This returns a row count estimation for files associated with a file pattern.

Nested Classes
Modifier and Type	Class and Description
`static class`	`TextRowCountEstimator.Builder` Builder for `TextRowCountEstimator`.
`static class`	`TextRowCountEstimator.LimitNumberOfFiles` This strategy stops sampling if we sample enough number of bytes.
`static class`	`TextRowCountEstimator.LimitNumberOfTotalBytes` This strategy stops sampling when total number of sampled bytes are more than some threshold.
`static class`	`TextRowCountEstimator.NoEstimationException` An exception that will be thrown if the estimator cannot get an estimation of the number of lines.
`static class`	`TextRowCountEstimator.SampleAllFiles` This strategy samples all the files.
`static interface`	`TextRowCountEstimator.SamplingStrategy` Sampling Strategy shows us when should we stop reading further files.

Constructors
Constructor and Description
`TextRowCountEstimator()`

All Methods Static Methods Instance Methods Abstract Methods Concrete Methods
Modifier and Type	Method and Description
`static TextRowCountEstimator.Builder`	`builder()`
`java.lang.Double`	`estimateRowCount(PipelineOptions pipelineOptions)` Estimates the number of non empty rows.
`abstract Compression`	`getCompression()`
`abstract byte[]`	`getDelimiters()`
`abstract FileIO.ReadMatches.DirectoryTreatment`	`getDirectoryTreatment()`
`abstract EmptyMatchTreatment`	`getEmptyMatchTreatment()`
`abstract java.lang.String`	`getFilePattern()`
`abstract long`	`getNumSampledBytesPerFile()`
`abstract TextRowCountEstimator.SamplingStrategy`	`getSamplingStrategy()`

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail
- TextRowCountEstimator
```
public TextRowCountEstimator()
```

public abstract long getNumSampledBytesPerFile()

public abstract byte[] getDelimiters()

public abstract java.lang.String getFilePattern()

public abstract Compression getCompression()

public abstract TextRowCountEstimator.SamplingStrategy getSamplingStrategy()

public abstract EmptyMatchTreatment getEmptyMatchTreatment()

public abstract FileIO.ReadMatches.DirectoryTreatment getDirectoryTreatment()

public static TextRowCountEstimator.Builder builder()

Class TextRowCountEstimator