Class PGline

java.lang.Object
org.postgresql.util.PGobject
org.postgresql.geometric.PGline
All Implemented Interfaces:
Serializable, Cloneable

public class PGline extends PGobject implements Serializable, Cloneable
This implements a line represented by the linear equation Ax + By + C = 0.
See Also:
  • Field Details

    • a

      public double a
      Coefficient of x.
    • b

      public double b
      Coefficient of y.
    • c

      public double c
      Constant.
    • isNull

      private boolean isNull
  • Constructor Details

    • 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(String s) throws SQLException
      Parameters:
      s - definition of the line in PostgreSQL's syntax.
      Throws:
      SQLException - on conversion failure
    • PGline

      public PGline()
      required by the driver.
  • Method Details

    • setValue

      private void setValue(PGpoint p1, PGpoint p2)
    • setValue

      private void setValue(double x1, double y1, double x2, double y2)
    • setValue

      public void setValue(String s) throws 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:
      SQLException - on conversion failure
    • equals

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