Class Criterion

java.lang.Object
com.codename1.backend.document.Criterion
public final class Criterion extends Object
One predicate of a document query: a field, an operator and its operand.

  • Field Summary

    Fields
    Modifier and Type
    Field
    Description
    static final int
    EQ
    Equal; a null operand matches a null or missing field.
    static final int
    GE
    Greater than or equal.
    static final int
    GT
    Greater than.
    static final int
    IN
    One of an array of operands; an empty array matches nothing.
    static final int
    LE
    Less than or equal.
    static final int
    LIKE
    SQL LIKE: % is any run of characters and _ any one character.
    static final int
    LT
    Less than.
    static final int
    NE
    Not equal; a null operand matches any present, non-null field.

  • Constructor Summary

    Constructors
    Constructor
    Description
    Criterion(String field, int op, Object value)
    A predicate; value is an Object[] for IN.

  • Method Summary

    Modifier and Type
    Method
    Description
    String
    getField()
    The document field.
    int
    getOp()
    One of the operator constants.
    Object
    getValue()
    The operand.
    static boolean
    like(String text, String pattern)
    Whether text matches a SQL LIKE pattern, case sensitive, without an escape character.
    boolean
    matches(Map doc)
    Whether doc satisfies this predicate, compared the way the stores do: numbers numerically, everything else by equals or natural order.

    Methods inherited from class Object

    clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

  • Field Details

  • Constructor Details

    • Criterion

      public Criterion(String field, int op, Object value)
      A predicate; value is an Object[] for IN.

  • Method Details

    • getField

      public String getField()
      The document field.

    • getOp

      public int getOp()
      One of the operator constants.

    • getValue

      public Object getValue()
      The operand.

    • like

      public static boolean like(String text, String pattern)
      Whether text matches a SQL LIKE pattern, case sensitive, without an escape character.

    • matches

      public boolean matches(Map doc)
      Whether doc satisfies this predicate, compared the way the stores do: numbers numerically, everything else by equals or natural order.