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
-
public final class BooleanTest extends SimplePredicate
Boolean test (IS [NOT] { TRUE | FALSE | UNKNOWN }).
-
-
Field Summary
Fields Modifier and Type Field Description private java.lang.Boolean
right
-
Fields 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
-
-
Constructor Summary
Constructors Constructor Description BooleanTest(Expression left, boolean not, boolean whenOperand, java.lang.Boolean right)
-
Method Summary
All Methods Instance Methods Concrete Methods Modifier and Type Method Description void
createIndexConditions(SessionLocal session, TableFilter filter)
Create index conditions if possible and attach them to the table filter.Expression
getNotIfPossible(SessionLocal session)
If it is possible, return the negated expression.java.lang.StringBuilder
getUnenclosedSQL(java.lang.StringBuilder builder, int sqlFlags)
Get the SQL statement of this expression.Value
getValue(SessionLocal session)
Return the resulting value for the current row.private boolean
getValue(Value left)
java.lang.StringBuilder
getWhenSQL(java.lang.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
-
-
-
-
Constructor Detail
-
BooleanTest
public BooleanTest(Expression left, boolean not, boolean whenOperand, java.lang.Boolean right)
-
-
Method Detail
-
getUnenclosedSQL
public java.lang.StringBuilder getUnenclosedSQL(java.lang.StringBuilder builder, int sqlFlags)
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
-
getWhenSQL
public java.lang.StringBuilder getWhenSQL(java.lang.StringBuilder builder, int sqlFlags)
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
-
getValue
public Value getValue(SessionLocal session)
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
-
getWhenValue
public boolean getWhenValue(SessionLocal session, Value left)
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
-
getValue
private boolean getValue(Value left)
-
getNotIfPossible
public Expression getNotIfPossible(SessionLocal session)
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
-
createIndexConditions
public void createIndexConditions(SessionLocal session, TableFilter filter)
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
-
-