Top Description Fields Constructors Methods
org.h2.expression

public final Class FieldReference

extends Operation1
Class Inheritance
Imports
java.util.Map.Entry, org.h2.api.ErrorCode, org.h2.engine.SessionLocal, org.h2.message.DbException, org.h2.mvstore.db.Store, org.h2.util.ParserUtil, org.h2.util.json.JSONObject, .JSONValue, org.h2.value.ExtTypeInfoRow, .TypeInfo, .Value, .ValueJson, .ValueNull, .ValueRow
Field reference.

Field Summary

Modifier and TypeField and Description
private final String
fieldName

private int
ordinal

Inherited from org.h2.expression.Operation1:
argtype

Constructor Summary

AccessConstructor and Description
public
FieldReference(Expression arg, String fieldName)

Method Summary

Modifier and TypeMethod and Description
public StringBuilder
getUnenclosedSQL(StringBuilder
string builder
builder, int
formatting flags
sqlFlags)

Implements abstract org.h2.expression.Expression.getUnenclosedSQL.

Get the SQL statement of this expression.

public Value
getValue(SessionLocal
the session
session)

Implements abstract org.h2.expression.Expression.getValue.

Return the resulting value for the current row.

public Expression
optimize(SessionLocal
the session
session)

Implements abstract org.h2.expression.Expression.optimize.

Try to optimize the expression.

Inherited from org.h2.expression.Operation1:
getCostgetSubexpressiongetSubexpressionCountgetTypeisEverythingmapColumnssetEvaluatableupdateAggregate

Field Detail

fieldNameback to summary
private final String fieldName
ordinalback to summary
private int ordinal

Constructor Detail

FieldReferenceback to summary
public FieldReference(Expression arg, String fieldName)

Method Detail

getUnenclosedSQLback to summary
public StringBuilder getUnenclosedSQL(StringBuilder builder, int sqlFlags)

Implements abstract org.h2.expression.Expression.getUnenclosedSQL.

Doc from org.h2.expression.Expression.getUnenclosedSQL.

Get the SQL statement of this expression. This may not always be the original SQL statement, especially after optimization. Enclosing '(' and ')' are never appended.

Parameters
builder:StringBuilder

string builder

sqlFlags:int

formatting flags

Returns:StringBuilder

the specified string builder

Annotations
@Override
getValueback to summary
public Value getValue(SessionLocal session)

Implements abstract org.h2.expression.Expression.getValue.

Doc from org.h2.expression.Expression.getValue.

Return the resulting value for the current row.

Parameters
session:SessionLocal

the session

Returns:Value

the result

Annotations
@Override
optimizeback to summary
public Expression optimize(SessionLocal session)

Implements abstract org.h2.expression.Expression.optimize.

Doc from org.h2.expression.Expression.optimize.

Try to optimize the expression.

Parameters
session:SessionLocal

the session

Returns:Expression

the optimized expression

Annotations
@Override