Modifier and Type | Field and Description |
---|---|
static SqlNodeList |
EMPTY
An immutable, empty SqlNodeList.
|
private java.util.List<SqlNode> |
list |
EMPTY_ARRAY, pos
Constructor and Description |
---|
SqlNodeList(java.util.Collection<? extends SqlNode> collection,
SqlParserPos pos)
Creates a
SqlNodeList containing the nodes in
list . |
SqlNodeList(SqlParserPos pos)
Creates an empty
SqlNodeList . |
Modifier and Type | Method and Description |
---|---|
<R> R |
accept(SqlVisitor<R> visitor)
Accepts a generic visitor.
|
void |
add(SqlNode node) |
(package private) void |
andOrList(SqlWriter writer,
SqlKind sepKind) |
SqlNodeList |
clone(SqlParserPos pos)
Clones a SqlNode with a different position.
|
(package private) void |
commaList(SqlWriter writer) |
boolean |
equalsDeep(SqlNode node,
Litmus litmus)
Returns whether this node is structurally equivalent to another node.
|
SqlNode |
get(int n) |
java.util.List<SqlNode> |
getList() |
static boolean |
isEmptyList(SqlNode node) |
java.util.Iterator<SqlNode> |
iterator() |
static SqlNodeList |
of(SqlNode node1) |
static SqlNodeList |
of(SqlNode node1,
SqlNode node2) |
static SqlNodeList |
of(SqlNode node1,
SqlNode node2,
SqlNode... nodes) |
SqlNode |
set(int n,
SqlNode node) |
int |
size() |
SqlNode[] |
toArray() |
void |
unparse(SqlWriter writer,
int leftPrec,
int rightPrec)
Writes a SQL representation of this node to a writer.
|
void |
validate(SqlValidator validator,
SqlValidatorScope scope)
Validates this node.
|
void |
validateExpr(SqlValidator validator,
SqlValidatorScope scope)
Validates this node in an expression context.
|
clone, clone, cloneArray, equalDeep, equalDeep, equalsDeep, findValidOptions, getKind, getMonotonicity, getParserPosition, isA, toSqlString, toSqlString, toString
public static final SqlNodeList EMPTY
private final java.util.List<SqlNode> list
public SqlNodeList(SqlParserPos pos)
SqlNodeList
.public SqlNodeList(java.util.Collection<? extends SqlNode> collection, SqlParserPos pos)
SqlNodeList
containing the nodes in
list
. The list is copied, but the nodes in it are not.public java.util.Iterator<SqlNode> iterator()
iterator
in interface java.lang.Iterable<SqlNode>
public java.util.List<SqlNode> getList()
public void add(SqlNode node)
public SqlNodeList clone(SqlParserPos pos)
SqlNode
public SqlNode get(int n)
public int size()
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)
.
void commaList(SqlWriter writer)
public void validate(SqlValidator validator, SqlValidatorScope scope)
SqlNode
The typical implementation of this method will make a callback to the
validator appropriate to the node type and context. The validator has
methods such as SqlValidator.validateLiteral(org.apache.calcite.sql.SqlLiteral)
for these purposes.
public <R> R accept(SqlVisitor<R> visitor)
SqlNode
Implementations of this method in subtypes simply call the appropriate
visit
method on the
visitor object
.
The type parameter R
must be consistent with the type
parameter of the visitor.
public boolean equalsDeep(SqlNode node, Litmus litmus)
SqlNode
equalsDeep
in class SqlNode
public SqlNode[] toArray()
public static boolean isEmptyList(SqlNode node)
public static SqlNodeList of(SqlNode node1)
public static SqlNodeList of(SqlNode node1, SqlNode node2)
public static SqlNodeList of(SqlNode node1, SqlNode node2, SqlNode... nodes)
public void validateExpr(SqlValidator validator, SqlValidatorScope scope)
SqlNode
Usually, this method does much the same as SqlNode.validate(org.apache.calcite.sql.validate.SqlValidator, org.apache.calcite.sql.validate.SqlValidatorScope)
, but a
SqlIdentifier
can occur in expression and non-expression
contexts.
validateExpr
in class SqlNode
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