public class ConditionAndOr extends Expression
Modifier and Type | Field and Description |
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static int |
AND
The AND condition type as in ID=1 AND NAME='Hello'.
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static int |
OR
The OR condition type as in ID=1 OR NAME='Hello'.
|
Constructor and Description |
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ConditionAndOr(int andOrType,
Expression left,
Expression right) |
Modifier and Type | Method and Description |
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void |
addFilterConditions(TableFilter filter,
boolean outerJoin)
Add conditions to a table filter if they can be evaluated.
|
void |
createIndexConditions(Session session,
TableFilter filter)
Create index conditions if possible and attach them to the table filter.
|
int |
getCost()
Estimate the cost to process the expression.
|
int |
getDisplaySize()
Get the display size of this expression.
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Expression |
getExpression(boolean getLeft)
Get the left or the right sub-expression of this condition.
|
Expression |
getNotIfPossible(Session session)
If it is possible, return the negated expression.
|
long |
getPrecision()
Get the precision of this expression.
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int |
getScale()
Get the scale of this expression.
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String |
getSQL()
Get the SQL statement of this expression.
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int |
getType()
Return the data type.
|
Value |
getValue(Session session)
Return the resulting value for the current row.
|
boolean |
isEverything(ExpressionVisitor visitor)
Check if this expression and all sub-expressions can fulfill a criteria.
|
void |
mapColumns(ColumnResolver resolver,
int level)
Map the columns of the resolver to expression columns.
|
Expression |
optimize(Session session)
Try to optimize the expression.
|
void |
setEvaluatable(TableFilter tableFilter,
boolean b)
Tell the expression columns whether the table filter can return values now.
|
void |
updateAggregate(Session session)
Update an aggregate value.
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getAlias, getBooleanValue, getColumnName, getExpressionColumns, getExpressionColumns, getNonAliasExpression, getNullable, getSchemaName, getTableAlias, getTableName, isAutoIncrement, isConstant, isValueSet, isWildcard, toString
public static final int AND
public static final int OR
public ConditionAndOr(int andOrType, Expression left, Expression right)
public String getSQL()
Expression
getSQL
in class Expression
public void createIndexConditions(Session session, TableFilter filter)
Expression
createIndexConditions
in class Expression
session
- the sessionfilter
- the table filterpublic Expression getNotIfPossible(Session session)
Expression
getNotIfPossible
in class Expression
session
- the sessionpublic Value getValue(Session session)
Expression
getValue
in class Expression
session
- the sessionpublic Expression optimize(Session session)
Expression
optimize
in class Expression
session
- the sessionpublic void addFilterConditions(TableFilter filter, boolean outerJoin)
Expression
addFilterConditions
in class Expression
filter
- the table filterouterJoin
- if the expression is part of an outer joinpublic void mapColumns(ColumnResolver resolver, int level)
Expression
mapColumns
in class Expression
resolver
- the column resolverlevel
- the subquery nesting levelpublic void setEvaluatable(TableFilter tableFilter, boolean b)
Expression
setEvaluatable
in class Expression
tableFilter
- the table filterb
- true if the table filter can return valuepublic void updateAggregate(Session session)
Expression
updateAggregate
in class Expression
session
- the sessionpublic boolean isEverything(ExpressionVisitor visitor)
Expression
isEverything
in class Expression
visitor
- the visitorpublic int getCost()
Expression
getCost
in class Expression
public Expression getExpression(boolean getLeft)
getLeft
- true to get the left sub-expression, false to get the right
sub-expression.public int getType()
Expression
getType
in class Expression
public int getScale()
Expression
getScale
in class Expression
public long getPrecision()
Expression
getPrecision
in class Expression
public int getDisplaySize()
Expression
getDisplaySize
in class Expression
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