Package org.postgresql.util

Class PGtokenizer

java.lang.Object
org.postgresql.util.PGtokenizer
public class PGtokenizer extends Object
This class is used to tokenize the text output of org.postgres. It's mainly used by the geometric classes, but is useful in parsing any output from custom data types output from org.postgresql.
See Also:

  • Field Details

  • Constructor Details

    • PGtokenizer

      public PGtokenizer(String string, char delim)

      Create a tokeniser.

      We could have used StringTokenizer to do this, however, we needed to handle nesting of '(' ')' '[' ']' '<' and '>' as these are used by the geometric data types.

      Parameters:
      string - containing tokens
      delim - single character to split the tokens

  • Method Details

    • tokenize

      public int tokenize(String string, char delim)
      This resets this tokenizer with a new string and/or delimiter.
      Parameters:
      string - containing tokens
      delim - single character to split the tokens
      Returns:
      number of tokens

    • getSize

      public int getSize()
      Returns:
      the number of tokens available

    • getToken

      public String getToken(int n)
      Parameters:
      n - Token number ( 0 ... getSize()-1 )
      Returns:
      The token value

    • tokenizeToken

      public PGtokenizer tokenizeToken(int n, char delim)

      This returns a new tokenizer based on one of our tokens.

      The geometric datatypes use this to process nested tokens (usually PGpoint).

      Parameters:
      n - Token number ( 0 ... getSize()-1 )
      delim - The delimiter to use
      Returns:
      A new instance of PGtokenizer based on the token

    • remove

      public static String remove(String s, String l, String t)
      This removes the lead/trailing strings from a string.
      Parameters:
      s - Source string
      l - Leading string to remove
      t - Trailing string to remove
      Returns:
      String without the lead/trailing strings

    • remove

      public void remove(String l, String t)
      This removes the lead/trailing strings from all tokens.
      Parameters:
      l - Leading string to remove
      t - Trailing string to remove

    • removePara

      public static String removePara(String s)
      Removes ( and ) from the beginning and end of a string.
      Parameters:
      s - String to remove from
      Returns:
      String without the ( or )

    • removePara

      public void removePara()
      Removes ( and ) from the beginning and end of all tokens.

    • removeBox

      public static String removeBox(String s)
      Removes [ and ] from the beginning and end of a string.
      Parameters:
      s - String to remove from
      Returns:
      String without the [ or ]

    • removeBox

      public void removeBox()
      Removes [ and ] from the beginning and end of all tokens.

    • removeAngle

      public static String removeAngle(String s)
      Removes < and > from the beginning and end of a string.
      Parameters:
      s - String to remove from
      Returns:
      String without the < or >

    • removeAngle

      public void removeAngle()
      Removes < and > from the beginning and end of all tokens.

    • removeCurlyBrace

      public static String removeCurlyBrace(String s)
      Removes curly braces { and } from the beginning and end of a string.
      Parameters:
      s - String to remove from
      Returns:
      String without the { or }

    • removeCurlyBrace

      public void removeCurlyBrace()
      Removes < and > from the beginning and end of all tokens.