Class SqlCharStringLiteral

All Implemented Interfaces:

public class SqlCharStringLiteral extends SqlLiteral
A character string literal.

Its SqlLiteral.value field is an NlsString and typeName is SqlTypeName.CHAR.

  • Constructor Details

  • Method Details

    • getNlsString

      @Deprecated public NlsString getNlsString()
      Returns the underlying NlsString.
    • getCollation

      public @Nullable SqlCollation getCollation()
      Returns the collation.
    • clone

      public SqlCharStringLiteral clone(SqlParserPos pos)
      Description copied from class: SqlNode
      Clones a SqlNode with a different position.
      clone in class SqlLiteral
    • 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 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 writer
      leftPrec - The precedence of the SqlNode immediately preceding this node in a depth-first scan of the parse tree
      rightPrec - The precedence of the SqlNode immediately
    • concat1

      protected org.apache.calcite.sql.SqlAbstractStringLiteral concat1(List<SqlLiteral> literals)
      literals - homogeneous StringLiteral args
      StringLiteral with concatenated value. this == lits[0], used only for method dispatch.