Package org.h2.expression.condition
Class BooleanTest
java.lang.Object
org.h2.expression.Expression
org.h2.expression.condition.Condition
org.h2.expression.condition.SimplePredicate
org.h2.expression.condition.BooleanTest
Boolean test (IS [NOT] { TRUE | FALSE | UNKNOWN }).
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Field Summary
FieldsFields inherited from class org.h2.expression.condition.SimplePredicate
left, not, whenOperand
Fields inherited from class org.h2.expression.Expression
AUTO_PARENTHESES, MAP_IN_AGGREGATE, MAP_IN_WINDOW, MAP_INITIAL, WITH_PARENTHESES, WITHOUT_PARENTHESES
Fields inherited from interface org.h2.util.HasSQL
ADD_PLAN_INFORMATION, DEFAULT_SQL_FLAGS, NO_CASTS, QUOTE_ONLY_WHEN_REQUIRED, REPLACE_LOBS_FOR_TRACE, TRACE_SQL_FLAGS
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Constructor Summary
ConstructorsConstructorDescriptionBooleanTest
(Expression left, boolean not, boolean whenOperand, Boolean right) -
Method Summary
Modifier and TypeMethodDescriptionvoid
createIndexConditions
(SessionLocal session, TableFilter filter) Create index conditions if possible and attach them to the table filter.getNotIfPossible
(SessionLocal session) If it is possible, return the negated expression.getUnenclosedSQL
(StringBuilder builder, int sqlFlags) Get the SQL statement of this expression.getValue
(SessionLocal session) Return the resulting value for the current row.private boolean
getWhenSQL
(StringBuilder builder, int sqlFlags) Appends the SQL statement of this when operand to the specified builder.boolean
getWhenValue
(SessionLocal session, Value left) Return the resulting value of when operand for the current row.Methods inherited from class org.h2.expression.condition.SimplePredicate
getCost, getSubexpression, getSubexpressionCount, isEverything, isWhenConditionOperand, mapColumns, needParentheses, optimize, setEvaluatable, updateAggregate
Methods inherited from class org.h2.expression.condition.Condition
castToBoolean, getType
Methods inherited from class org.h2.expression.Expression
addFilterConditions, getAlias, getBooleanValue, getColumnName, getColumnNameForView, getEnclosedSQL, getNonAliasExpression, getNullable, getSchemaName, getSQL, getSQL, getSQL, getSQL, getTableAlias, getTableName, isConstant, isIdentity, isNullConstant, isValueSet, optimizeCondition, toString, writeExpressions, writeExpressions
Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait
Methods inherited from interface org.h2.util.HasSQL
getTraceSQL
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Field Details
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right
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Constructor Details
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BooleanTest
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Method Details
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getUnenclosedSQL
Description copied from class:Expression
Get the SQL statement of this expression. This may not always be the original SQL statement, especially after optimization. Enclosing '(' and ')' are never appended.- Specified by:
getUnenclosedSQL
in classExpression
- Parameters:
builder
- string buildersqlFlags
- formatting flags- Returns:
- the specified string builder
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getWhenSQL
Description copied from class:Expression
Appends the SQL statement of this when operand to the specified builder.- Overrides:
getWhenSQL
in classExpression
- Parameters:
builder
- string buildersqlFlags
- formatting flags- Returns:
- the specified string builder
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getValue
Description copied from class:Expression
Return the resulting value for the current row.- Specified by:
getValue
in classExpression
- Parameters:
session
- the session- Returns:
- the result
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getWhenValue
Description copied from class:Expression
Return the resulting value of when operand for the current row.- Overrides:
getWhenValue
in classExpression
- Parameters:
session
- the sessionleft
- value on the left side- Returns:
- the result
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getValue
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getNotIfPossible
Description copied from class:Expression
If it is possible, return the negated expression. This is used to optimize NOT expressions: NOT ID>10 can be converted to ID<=10. Returns null if negating is not possible.- Overrides:
getNotIfPossible
in classExpression
- Parameters:
session
- the session- Returns:
- the negated expression, or null
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createIndexConditions
Description copied from class:Expression
Create index conditions if possible and attach them to the table filter.- Overrides:
createIndexConditions
in classExpression
- Parameters:
session
- the sessionfilter
- the table filter
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