Package org.yamcs.yarch.streamsql
Class TableWalkerBuilder
- java.lang.Object
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- org.yamcs.yarch.streamsql.TableWalkerBuilder
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- All Implemented Interfaces:
FilterableTarget
public class TableWalkerBuilder extends Object implements FilterableTarget
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Constructor Summary
Constructors Constructor Description TableWalkerBuilder(YarchDatabaseInstance ydb, TableDefinition tableDefinition)
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Method Summary
All Methods Instance Methods Concrete Methods Modifier and Type Method Description void
addInFilter(ColumnExpression cexpr, boolean negation, Set<Object> values)
currently adds only filters on value based partitionsvoid
addRelOpFilter(ColumnExpression cexpr, RelOp relOp, Object value)
Tries to add a restriction for the rows to be selected/updated/deleted.TableWalker
build()
TableDefinition
getTableDefinition()
void
setAscending(boolean ascending)
void
setFollow(boolean follow)
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Constructor Detail
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TableWalkerBuilder
public TableWalkerBuilder(YarchDatabaseInstance ydb, TableDefinition tableDefinition)
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Method Detail
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addRelOpFilter
public void addRelOpFilter(ColumnExpression cexpr, RelOp relOp, Object value) throws StreamSqlException
Description copied from interface:FilterableTarget
Tries to add a restriction for the rows to be selected/updated/deleted. This will implement optimisations to avoid scanning the table row by row.Typically it works if the condition refers to the primary key.
- Specified by:
addRelOpFilter
in interfaceFilterableTarget
- Throws:
StreamSqlException
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addInFilter
public void addInFilter(ColumnExpression cexpr, boolean negation, Set<Object> values) throws StreamSqlException
currently adds only filters on value based partitions- Specified by:
addInFilter
in interfaceFilterableTarget
- Throws:
StreamSqlException
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build
public TableWalker build()
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setAscending
public void setAscending(boolean ascending)
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setFollow
public void setFollow(boolean follow)
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getTableDefinition
public TableDefinition getTableDefinition()
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