Class EnumFieldSource
- java.lang.Object
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- org.apache.lucene.queries.function.ValueSource
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- org.apache.lucene.queries.function.valuesource.FieldCacheSource
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- org.apache.lucene.queries.function.valuesource.EnumFieldSource
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public class EnumFieldSource extends FieldCacheSource
Obtains int field values fromLeafReader.getNumericDocValues(java.lang.String)
and makes those values available as other numeric types, casting as needed. strVal of the value is not the int value, but its string (displayed) value
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Field Summary
Fields Modifier and Type Field Description (package private) static java.lang.Integer
DEFAULT_VALUE
(package private) java.util.Map<java.lang.Integer,java.lang.String>
enumIntToStringMap
(package private) java.util.Map<java.lang.String,java.lang.Integer>
enumStringToIntMap
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Fields inherited from class org.apache.lucene.queries.function.valuesource.FieldCacheSource
field
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Constructor Summary
Constructors Constructor Description EnumFieldSource(java.lang.String field, java.util.Map<java.lang.Integer,java.lang.String> enumIntToStringMap, java.util.Map<java.lang.String,java.lang.Integer> enumStringToIntMap)
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Method Summary
All Methods Static Methods Instance Methods Concrete Methods Modifier and Type Method Description java.lang.String
description()
description of field, used in explain()boolean
equals(java.lang.Object o)
FunctionValues
getValues(java.util.Map context, LeafReaderContext readerContext)
Gets the values for this reader and the context that was previously passed to createWeight().int
hashCode()
private java.lang.String
intValueToStringValue(java.lang.Integer intVal)
private java.lang.Integer
stringValueToIntValue(java.lang.String stringVal)
private static java.lang.Integer
tryParseInt(java.lang.String valueStr)
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Methods inherited from class org.apache.lucene.queries.function.valuesource.FieldCacheSource
getField
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Methods inherited from class org.apache.lucene.queries.function.ValueSource
asDoubleValuesSource, asLongValuesSource, createWeight, fromDoubleValuesSource, getSortField, newContext, toString
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Method Detail
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tryParseInt
private static java.lang.Integer tryParseInt(java.lang.String valueStr)
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intValueToStringValue
private java.lang.String intValueToStringValue(java.lang.Integer intVal)
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stringValueToIntValue
private java.lang.Integer stringValueToIntValue(java.lang.String stringVal)
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description
public java.lang.String description()
Description copied from class:ValueSource
description of field, used in explain()- Overrides:
description
in classFieldCacheSource
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getValues
public FunctionValues getValues(java.util.Map context, LeafReaderContext readerContext) throws java.io.IOException
Description copied from class:ValueSource
Gets the values for this reader and the context that was previously passed to createWeight(). The values must be consumed in a forward docID manner, and you must call this method again to iterate through the values again.- Specified by:
getValues
in classValueSource
- Throws:
java.io.IOException
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equals
public boolean equals(java.lang.Object o)
- Overrides:
equals
in classFieldCacheSource
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hashCode
public int hashCode()
- Overrides:
hashCode
in classFieldCacheSource
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