Package org.apache.calcite.sql
Class SqlNumericLiteral
- java.lang.Object
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- org.apache.calcite.sql.SqlNode
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- org.apache.calcite.sql.SqlLiteral
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- org.apache.calcite.sql.SqlNumericLiteral
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- All Implemented Interfaces:
java.lang.Cloneable
public class SqlNumericLiteral extends SqlLiteral
A numeric SQL literal.
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Nested Class Summary
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Nested classes/interfaces inherited from class org.apache.calcite.sql.SqlLiteral
SqlLiteral.SqlSymbol
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Field Summary
Fields Modifier and Type Field Description private boolean
isExact
private java.lang.Integer
prec
private java.lang.Integer
scale
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Fields inherited from class org.apache.calcite.sql.SqlLiteral
value
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Fields inherited from class org.apache.calcite.sql.SqlNode
EMPTY_ARRAY, pos
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Constructor Summary
Constructors Modifier Constructor Description protected
SqlNumericLiteral(java.math.BigDecimal value, java.lang.Integer prec, java.lang.Integer scale, boolean isExact, SqlParserPos pos)
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Method Summary
All Methods Instance Methods Concrete Methods Modifier and Type Method 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 thanSqlLiteral.unparse(org.apache.calcite.sql.SqlWriter, int, int)
Typical values: Hello, world! 12.34 {null} 1969-04-29void
unparse(SqlWriter writer, int leftPrec, int rightPrec)
Writes a SQL representation of this node to a writer.-
Methods inherited from class org.apache.calcite.sql.SqlLiteral
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
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Methods inherited from class org.apache.calcite.sql.SqlNode
clone, clone, cloneArray, equalDeep, equalDeep, equalsDeep, findValidOptions, getParserPosition, isA, toSqlString, toSqlString, toString, validateExpr
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Constructor Detail
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SqlNumericLiteral
protected SqlNumericLiteral(java.math.BigDecimal value, java.lang.Integer prec, java.lang.Integer scale, boolean isExact, SqlParserPos pos)
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Method Detail
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getPrec
public java.lang.Integer getPrec()
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getScale
public java.lang.Integer getScale()
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isExact
public boolean isExact()
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clone
public SqlNumericLiteral clone(SqlParserPos pos)
Description copied from class:SqlNode
Clones a SqlNode with a different position.- Overrides:
clone
in classSqlLiteral
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unparse
public void unparse(SqlWriter writer, int leftPrec, int rightPrec)
Description copied from class:SqlNode
Writes a SQL representation of this node to a writer.The
leftPrec
andrightPrec
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)
.- Overrides:
unparse
in classSqlLiteral
- Parameters:
writer
- Target writerleftPrec
- The precedence of theSqlNode
immediately preceding this node in a depth-first scan of the parse treerightPrec
- The precedence of theSqlNode
immediately
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toValue
public java.lang.String toValue()
Description copied from class:SqlLiteral
For calc program builder - value may be different thanSqlLiteral.unparse(org.apache.calcite.sql.SqlWriter, int, int)
Typical values:- Hello, world!
- 12.34
- {null}
- 1969-04-29
- Overrides:
toValue
in classSqlLiteral
- Returns:
- string representation of the value
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createSqlType
public RelDataType createSqlType(RelDataTypeFactory typeFactory)
- Overrides:
createSqlType
in classSqlLiteral
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isInteger
public boolean isInteger()
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