Class BaseColumnTransform
- java.lang.Object
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- org.datavec.api.transform.transform.BaseTransform
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- org.datavec.api.transform.transform.BaseColumnTransform
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- Direct Known Subclasses:
AppendStringColumnTransform
,BaseDoubleTransform
,BaseFloatTransform
,BaseIntegerTransform
,BaseStringTransform
,DoubleMathOpTransform
,FloatMathOpTransform
,IntegerMathOpTransform
,IntegerToCategoricalTransform
,LongMathOpTransform
,NDArrayMathFunctionTransform
,NDArrayScalarOpTransform
,StringToCategoricalTransform
,StringToTimeTransform
,TimeMathOpTransform
public abstract class BaseColumnTransform extends BaseTransform implements ColumnOp
- See Also:
- Serialized Form
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Field Summary
Fields Modifier and Type Field Description protected String
columnName
protected int
columnNumber
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Fields inherited from class org.datavec.api.transform.transform.BaseTransform
inputSchema
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Constructor Summary
Constructors Constructor Description BaseColumnTransform(String columnName)
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Method Summary
All Methods Instance Methods Abstract Methods Concrete Methods Modifier and Type Method Description String
columnName()
Returns a singular column name this op is meant to run onString[]
columnNames()
Returns column names this op is meant to run onboolean
equals(Object o)
abstract ColumnMetaData
getNewColumnMetaData(String newName, ColumnMetaData oldColumnType)
int
hashCode()
List<Writable>
map(List<Writable> writables)
Transform a writable in to another writableabstract Writable
map(Writable columnWritable)
Object
mapSequence(Object sequence)
Transform a sequenceString
outputColumnName()
The output column name after the operation has been appliedString[]
outputColumnNames()
The output column names This will often be the same as the inputvoid
setInputSchema(Schema inputSchema)
Set the input schema.abstract String
toString()
Schema
transform(Schema schema)
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Methods inherited from class org.datavec.api.transform.transform.BaseTransform
getInputSchema, mapSequence
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Methods inherited from class java.lang.Object
clone, finalize, getClass, notify, notifyAll, wait, wait, wait
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Methods inherited from interface org.datavec.api.transform.ColumnOp
getInputSchema
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Field Detail
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columnName
protected String columnName
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columnNumber
protected int columnNumber
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Constructor Detail
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BaseColumnTransform
public BaseColumnTransform(String columnName)
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Method Detail
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setInputSchema
public void setInputSchema(Schema inputSchema)
Description copied from interface:ColumnOp
Set the input schema.- Specified by:
setInputSchema
in interfaceColumnOp
- Overrides:
setInputSchema
in classBaseTransform
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getNewColumnMetaData
public abstract ColumnMetaData getNewColumnMetaData(String newName, ColumnMetaData oldColumnType)
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map
public List<Writable> map(List<Writable> writables)
Description copied from interface:Transform
Transform a writable in to another writable
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outputColumnName
public String outputColumnName()
The output column name after the operation has been applied- Specified by:
outputColumnName
in interfaceColumnOp
- Returns:
- the output column name
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outputColumnNames
public String[] outputColumnNames()
The output column names This will often be the same as the input- Specified by:
outputColumnNames
in interfaceColumnOp
- Returns:
- the output column names
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columnNames
public String[] columnNames()
Returns column names this op is meant to run on- Specified by:
columnNames
in interfaceColumnOp
- Returns:
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columnName
public String columnName()
Returns a singular column name this op is meant to run on- Specified by:
columnName
in interfaceColumnOp
- Returns:
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toString
public abstract String toString()
- Specified by:
toString
in classBaseTransform
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mapSequence
public Object mapSequence(Object sequence)
Transform a sequence- Specified by:
mapSequence
in interfaceTransform
- Parameters:
sequence
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