Module litebridge.db.spi
Package org.litebridgedb.db.spi.query

Record Class Condition

java.lang.Object
java.lang.Record
org.litebridgedb.db.spi.query.Condition
Record Components:
lhs - Left-hand side of the condition; usually a expression expression.
operator - Operator for this condition, which is used to define the comparison type in a query (e.g., equality, greater than, less than).
rhs - Right-hand side/operand/value associated with the condition.
public record Condition(SelectExpression lhs, Operator operator, @Nullable SelectExpression rhs) extends Record
A condition in a database query, specifying a column, operator, and value/operand.
See Also:

  • Constructor Details

    • Condition

      public Condition(SelectExpression lhs, Operator operator, @Nullable Object value)
      Convenience constructor that wraps the given value into a LiteralExpression.

      Equivalent to Condition(lhs, operator, new LiteralExpression(value)).

      Parameters:
      lhs - Left-hand side of the condition; usually a expression expression.
      operator - IS_NULL or IS_NOT_NULL operator
      value - Literal value/operand for the RHS of the condition; may be null.
      Throws:
      IllegalArgumentException - if operator is not IS_NULL or IS_NOT_NULL

    • Condition

      public Condition(SelectExpression lhs, Operator operator)
      Convenience constructor for Operator.IS_NULL and @{code Operator.IS_NOT_NULL} operators.

      Equivalent to Condition(lhs, operator, null).

      Parameters:
      lhs - Left-hand side of the condition; usually a expression expression.
      operator - IS_NULL or IS_NOT_NULL operator
      Throws:
      IllegalArgumentException - if operator is not IS_NULL or IS_NOT_NULL

    • Condition

      public Condition(SelectExpression lhs, Operator operator, @Nullable SelectExpression rhs)
      Creates an instance of a Condition record class.
      Parameters:
      lhs - the value for the lhs record component
      operator - the value for the operator record component
      rhs - the value for the rhs record component

  • Method Details

    • toString

      public final String toString()
      Returns a string representation of this record class. The representation contains the name of the class, followed by the name and value of each of the record components.
      Specified by:
      toString in class Record
      Returns:
      a string representation of this object

    • hashCode

      public final int hashCode()
      Returns a hash code value for this object. The value is derived from the hash code of each of the record components.
      Specified by:
      hashCode in class Record
      Returns:
      a hash code value for this object

    • equals

      public final boolean equals(Object o)
      Indicates whether some other object is "equal to" this one. The objects are equal if the other object is of the same class and if all the record components are equal. All components in this record class are compared with Objects::equals(Object,Object).
      Specified by:
      equals in class Record
      Parameters:
      o - the object with which to compare
      Returns:
      true if this object is the same as the o argument; false otherwise.

    • lhs

      public SelectExpression lhs()
      Returns the value of the lhs record component.
      Returns:
      the value of the lhs record component

    • operator

      public Operator operator()
      Returns the value of the operator record component.
      Returns:
      the value of the operator record component

    • rhs

      public @Nullable SelectExpression rhs()
      Returns the value of the rhs record component.
      Returns:
      the value of the rhs record component