Package org.elasticsearch.xpack.esql.core.type

Class CompactMultiTypeEsField

java.lang.Object

org.elasticsearch.xpack.esql.core.type.EsField

org.elasticsearch.xpack.esql.core.type.UnionTypeEsField

org.elasticsearch.xpack.esql.core.type.CompactMultiTypeEsField

All Implemented Interfaces:

Writeable

public final class CompactMultiTypeEsField
extends UnionTypeEsField

Memory-efficient variant of MultiTypeEsField that stores the per-source-type conversion instead of per-index.

Nested Class Summary

Nested classes/interfaces inherited from class org.elasticsearch.xpack.esql.core.type.EsField

EsField.Exact, EsField.TimeSeriesFieldType

Nested classes/interfaces inherited from interface org.elasticsearch.common.io.stream.Writeable

Writeable.Reader<V>, Writeable.Writer<V>

Field Summary

Fields

Modifier and Type	Field	Description
static final TransportVersion	CompactMultiTypeEsField

Constructor Summary

Constructors

Constructor	Description
CompactMultiTypeEsField(String name, DataType dataType, boolean aggregatable, Map<DataType,Expression> typeToConversionExpressions, EsField.TimeSeriesFieldType timeSeriesFieldType, Expression unmappedConversionExpression)

Method Summary

Modifier and Type	Method	Description
boolean	equals(Object obj)
Expression	getConversionExpressionForType(DataType type)	Returns the conversion expression to apply for the given source DataType, or null if no conversion is registered for that type.
Collection<Expression>	getConversionExpressions()
String	getNodeStringName()
Map<DataType,Expression>	getTypeToConversionExpressions()
Expression	getUnmappedConversionExpression()	Conversion expression to apply when the field is unmapped in the index (treating it as DataType.KEYWORD) or null if there is no such conversion (i.e., unmapped indices should produce null).
String	getWriteableName(TransportVersion transportVersion)	This needs to be overridden by subclasses for specific serialization
int	hashCode()
static CompactMultiTypeEsField	resolveFrom(TypeConflictedField tcf, Map<String,Expression> typesToConversionExpressions, Expression unmappedConversionExpression)
UnionTypeEsField	rewrapWithCast(Expression convertExpression)	Wraps an existing union-type field's per-(index|type) conversions with another conversion expression on top, so the composite expression first does the original cast then the additional cast.
String	toString()
UnionTypeEsField	withPotentiallyUnmappedExpression(Expression unmappedExpression)	Returns a copy of this field with the given unmapped conversion expression.
void	writeContent(StreamOutput out)	This needs to be overridden by subclasses for specific serialization

Methods inherited from class org.elasticsearch.xpack.esql.core.type.EsField

getDataType, getExactField, getExactInfo, getName, getProperties, getReader, getTimeSeriesFieldType, isAggregatable, isAlias, readFrom, readTimeSeriesFieldType, withDataType, withWidenedSmallNumeric, writeTimeSeriesFieldType, writeTo

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Field Details

CompactMultiTypeEsField

public static final TransportVersion CompactMultiTypeEsField

Constructor Details

CompactMultiTypeEsField

public CompactMultiTypeEsField(String name,
 DataType dataType,
 boolean aggregatable,
 Map<DataType,Expression> typeToConversionExpressions,
 EsField.TimeSeriesFieldType timeSeriesFieldType,
 @Nullable
 Expression unmappedConversionExpression)

Method Details

writeContent

public void writeContent(StreamOutput out)
                  throws IOException

Description copied from class: EsField

This needs to be overridden by subclasses for specific serialization

Overrides:

writeContent in class EsField

Throws:

IOException

getWriteableName

public String getWriteableName(TransportVersion transportVersion)

Description copied from class: EsField

This needs to be overridden by subclasses for specific serialization

Overrides:

getWriteableName in class EsField

getNodeStringName

public String getNodeStringName()

Overrides:

getNodeStringName in class EsField

getTypeToConversionExpressions

public Map<DataType,Expression> getTypeToConversionExpressions()

getConversionExpressions

public Collection<Expression> getConversionExpressions()

Specified by:

getConversionExpressions in class UnionTypeEsField

rewrapWithCast

public UnionTypeEsField rewrapWithCast(Expression convertExpression)

Description copied from class: UnionTypeEsField

Wraps an existing union-type field's per-(index|type) conversions with another conversion expression on top, so the composite expression first does the original cast then the additional cast.

Specified by:

rewrapWithCast in class UnionTypeEsField

withPotentiallyUnmappedExpression

public UnionTypeEsField withPotentiallyUnmappedExpression(Expression unmappedExpression)

Description copied from class: UnionTypeEsField

Returns a copy of this field with the given unmapped conversion expression.

Specified by:

withPotentiallyUnmappedExpression in class UnionTypeEsField

getConversionExpressionForType

@Nullable
public Expression getConversionExpressionForType(DataType type)

Returns the conversion expression to apply for the given source DataType, or null if no conversion is registered for that type.

getUnmappedConversionExpression

@Nullable
public Expression getUnmappedConversionExpression()

Description copied from class: UnionTypeEsField

Conversion expression to apply when the field is unmapped in the index (treating it as DataType.KEYWORD) or null if there is no such conversion (i.e., unmapped indices should produce null).

Specified by:

getUnmappedConversionExpression in class UnionTypeEsField

resolveFrom

public static CompactMultiTypeEsField resolveFrom(TypeConflictedField tcf,
 Map<String,Expression> typesToConversionExpressions,
 @Nullable
 Expression unmappedConversionExpression)

equals

public boolean equals(Object obj)

Overrides:

equals in class EsField

hashCode

public int hashCode()

Overrides:

hashCode in class EsField

toString

public String toString()

Overrides:

toString in class EsField