Package org.postgresql.geometric

Class PGline

  • All Implemented Interfaces:
    java.io.Serializable, java.lang.Cloneable
    public class PGline
extends PGobject
implements java.io.Serializable, java.lang.Cloneable
    This implements a line represented by the linear equation Ax + By + C = 0.
    See Also:
    Serialized Form

    • Field Summary

      Fields 
      Modifier and Type Field Description
      double a
      Coefficient of x.
      double b
      Coefficient of y.
      double c
      Constant.

    • Constructor Summary

      Constructors 
      Constructor Description
      PGline()
      required by the driver.
      PGline​(double a, double b, double c)  
      PGline​(double x1, double y1, double x2, double y2)  
      PGline​(java.lang.String s)  
      PGline​(PGlseg lseg)  
      PGline​(PGpoint p1, PGpoint p2)  

    • Method Summary

      All Methods Instance Methods Concrete Methods 
      Modifier and Type Method Description
      java.lang.Object clone()
      This must be overridden to allow the object to be cloned.
      boolean equals​(java.lang.Object obj)
      This must be overridden to allow comparisons of objects.
      java.lang.String getValue()
      This must be overridden, to return the value of the object, in the form required by org.postgresql.
      int hashCode()
      Compute hash.
      void setValue​(java.lang.String s)
      This method sets the value of this object.

      • Methods inherited from class java.lang.Object

        finalize, getClass, notify, notifyAll, wait, wait, wait

    • Field Detail

      • a

        public double a
        Coefficient of x.

      • b

        public double b
        Coefficient of y.

      • c

        public double c
        Constant.

    • Constructor Detail

      • PGline

        public PGline​(double a,
              double b,
              double c)
        Parameters:
        a - coefficient of x
        b - coefficient of y
        c - constant

      • PGline

        public PGline​(double x1,
              double y1,
              double x2,
              double y2)
        Parameters:
        x1 - coordinate for first point on the line
        y1 - coordinate for first point on the line
        x2 - coordinate for second point on the line
        y2 - coordinate for second point on the line

      • PGline

        public PGline​(PGpoint p1,
              PGpoint p2)
        Parameters:
        p1 - first point on the line
        p2 - second point on the line

      • PGline

        public PGline​(PGlseg lseg)
        Parameters:
        lseg - Line segment which calls on this line.

      • PGline

        public PGline​(java.lang.String s)
       throws java.sql.SQLException
        Parameters:
        s - definition of the line in PostgreSQL's syntax.
        Throws:
        java.sql.SQLException - on conversion failure

      • PGline

        public PGline()
        required by the driver.

    • Method Detail

      • setValue

        public void setValue​(java.lang.String s)
              throws java.sql.SQLException
        Description copied from class: PGobject
        This method sets the value of this object. It must be overridden.
        Overrides:
        setValue in class PGobject
        Parameters:
        s - Definition of the line in PostgreSQL's syntax
        Throws:
        java.sql.SQLException - on conversion failure

      • equals

        public boolean equals​(java.lang.Object obj)
        Description copied from class: PGobject
        This must be overridden to allow comparisons of objects.
        Overrides:
        equals in class PGobject
        Parameters:
        obj - Object to compare with
        Returns:
        true if the two lines are identical

      • hashCode

        public int hashCode()
        Description copied from class: PGobject
        Compute hash. As equals() use only value. Return the same hash for the same value.
        Overrides:
        hashCode in class PGobject
        Returns:
        Value hashcode, 0 if value is null Objects.hashCode(Object)

      • getValue

        public java.lang.String getValue()
        Description copied from class: PGobject
        This must be overridden, to return the value of the object, in the form required by org.postgresql.
        Overrides:
        getValue in class PGobject
        Returns:
        the PGline in the syntax expected by org.postgresql

      • clone

        public java.lang.Object clone()
                       throws java.lang.CloneNotSupportedException
        Description copied from class: PGobject
        This must be overridden to allow the object to be cloned.
        Overrides:
        clone in class PGobject
        Throws:
        java.lang.CloneNotSupportedException