Package org.apache.druid.query.filter
Class ExpressionDimFilter
- java.lang.Object
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- org.apache.druid.query.filter.AbstractOptimizableDimFilter
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- org.apache.druid.query.filter.ExpressionDimFilter
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public class ExpressionDimFilter extends AbstractOptimizableDimFilter implements DimFilter
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Nested Class Summary
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Nested classes/interfaces inherited from interface org.apache.druid.query.filter.DimFilter
DimFilter.DimFilterToStringBuilder
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Constructor Summary
Constructors Constructor Description ExpressionDimFilter(String expression, ExprMacroTable macroTable)
Constructor used in various tests that don't need to provideFilterTuning
.ExpressionDimFilter(String expression, Expr parsed, FilterTuning filterTuning)
Constructor for already-parsed-and-analyzed expressions.ExpressionDimFilter(String expression, FilterTuning filterTuning, ExprMacroTable macroTable)
Constructor for deserialization.
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Method Summary
All Methods Instance Methods Concrete Methods Modifier and Type Method Description boolean
equals(Object o)
byte[]
getCacheKey()
Get a byte array used as a cache key.com.google.common.collect.RangeSet<String>
getDimensionRangeSet(String dimension)
Returns a RangeSet that represents the possible range of the input dimension for this DimFilter.This is applicable to filters that use dimensions such as select, in, bound, and logical filters such as and, or, not.String
getExpression()
FilterTuning
getFilterTuning()
Set<String>
getRequiredColumns()
int
hashCode()
DimFilter
optimize()
Filter
toFilter()
Returns a Filter that implements this DimFilter.String
toString()
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Methods inherited from class org.apache.druid.query.filter.AbstractOptimizableDimFilter
toOptimizedFilter
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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.apache.druid.query.filter.DimFilter
toOptimizedFilter
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Constructor Detail
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ExpressionDimFilter
public ExpressionDimFilter(String expression, @Nullable FilterTuning filterTuning, ExprMacroTable macroTable)
Constructor for deserialization.
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ExpressionDimFilter
public ExpressionDimFilter(String expression, ExprMacroTable macroTable)
Constructor used in various tests that don't need to provideFilterTuning
.
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ExpressionDimFilter
public ExpressionDimFilter(String expression, Expr parsed, @Nullable FilterTuning filterTuning)
Constructor for already-parsed-and-analyzed expressions.
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Method Detail
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getExpression
public String getExpression()
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getFilterTuning
@Nullable public FilterTuning getFilterTuning()
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optimize
public DimFilter optimize()
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toFilter
public Filter toFilter()
Description copied from interface:DimFilter
Returns a Filter that implements this DimFilter. This does not generally involve optimizing the DimFilter, so it does make sense to optimize first and then call toFilter on the resulting DimFilter.
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getDimensionRangeSet
public com.google.common.collect.RangeSet<String> getDimensionRangeSet(String dimension)
Description copied from interface:DimFilter
Returns a RangeSet that represents the possible range of the input dimension for this DimFilter.This is applicable to filters that use dimensions such as select, in, bound, and logical filters such as and, or, not. Null represents that the range cannot be determined, and will be returned for filters such as javascript and regex where there's no easy way to determine the filtered range. It is treated the same way as an all range in most cases, however there are some subtle difference at logical filters such as not filter, where complement of all is nothing while complement of null is still null.- Specified by:
getDimensionRangeSet
in interfaceDimFilter
- Parameters:
dimension
- name of the dimension to get range for- Returns:
- a RangeSet that represent the possible range of the input dimension, or null if it is not possible to determine for this DimFilter.
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getRequiredColumns
public Set<String> getRequiredColumns()
- Specified by:
getRequiredColumns
in interfaceDimFilter
- Returns:
- a HashSet that represents all columns' name which the DimFilter required to do filter.
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getCacheKey
public byte[] getCacheKey()
Description copied from interface:Cacheable
Get a byte array used as a cache key.- Specified by:
getCacheKey
in interfaceCacheable
- Returns:
- a cache key
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