public class SqlNumericLiteral extends SqlLiteral
SqlLiteral.SqlSymbol
Modifier and Type | Field and Description |
---|---|
private boolean |
isExact |
private java.lang.Integer |
prec |
private java.lang.Integer |
scale |
value
EMPTY_ARRAY, pos
Modifier | Constructor and Description |
---|---|
protected |
SqlNumericLiteral(java.math.BigDecimal value,
java.lang.Integer prec,
java.lang.Integer scale,
boolean isExact,
SqlParserPos pos) |
Modifier and Type | Method and Description |
---|---|
SqlNumericLiteral |
clone(SqlParserPos pos)
Clones a SqlNode with a different position.
|
RelDataType |
createSqlType(RelDataTypeFactory typeFactory) |
java.lang.Integer |
getPrec() |
java.lang.Integer |
getScale() |
boolean |
isExact() |
boolean |
isInteger() |
java.lang.String |
toValue()
For calc program builder - value may be different than
SqlLiteral.unparse(org.apache.calcite.sql.SqlWriter, int, int)
Typical values:
Hello, world!
12.34
{null}
1969-04-29
|
void |
unparse(SqlWriter writer,
int leftPrec,
int rightPrec)
Writes a SQL representation of this node to a writer.
|
accept, bigDecimalValue, booleanValue, createApproxNumeric, createBinaryString, createBinaryString, createBoolean, createCharString, createCharString, createDate, createDate, createExactNumeric, createInterval, createNegative, createNull, createSample, createSymbol, createTime, createTime, createTimestamp, createTimestamp, createUnknown, equals, equalsDeep, getKind, getMonotonicity, getStringValue, getTypeName, getValue, getValueAs, hashCode, intValue, longValue, sampleValue, signum, stringValue, symbolValue_, symbolValue, unchain, unescapeUnicode, validate, value, valueMatchesType
clone, clone, cloneArray, equalDeep, equalDeep, equalsDeep, findValidOptions, getParserPosition, isA, toSqlString, toSqlString, toString, validateExpr
private java.lang.Integer prec
private java.lang.Integer scale
private boolean isExact
protected SqlNumericLiteral(java.math.BigDecimal value, java.lang.Integer prec, java.lang.Integer scale, boolean isExact, SqlParserPos pos)
public java.lang.Integer getPrec()
public java.lang.Integer getScale()
public boolean isExact()
public SqlNumericLiteral clone(SqlParserPos pos)
SqlNode
clone
in class SqlLiteral
public void unparse(SqlWriter writer, int leftPrec, int rightPrec)
SqlNode
The leftPrec
and rightPrec
parameters give
us enough context to decide whether we need to enclose the expression in
parentheses. For example, we need parentheses around "2 + 3" if preceded
by "5 *". This is because the precedence of the "*" operator is greater
than the precedence of the "+" operator.
The algorithm handles left- and right-associative operators by giving them slightly different left- and right-precedence.
If SqlWriter.isAlwaysUseParentheses()
is true, we use
parentheses even when they are not required by the precedence rules.
For the details of this algorithm, see SqlCall.unparse(org.apache.calcite.sql.SqlWriter, int, int)
.
unparse
in class SqlLiteral
writer
- Target writerleftPrec
- The precedence of the SqlNode
immediately
preceding this node in a depth-first scan of the parse
treerightPrec
- The precedence of the SqlNode
immediatelypublic java.lang.String toValue()
SqlLiteral
SqlLiteral.unparse(org.apache.calcite.sql.SqlWriter, int, int)
Typical values:
toValue
in class SqlLiteral
public RelDataType createSqlType(RelDataTypeFactory typeFactory)
createSqlType
in class SqlLiteral
public boolean isInteger()
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