QueryOperator.java

package com.ctp.cdi.query.builder;

/**
 * Comparison options for queries.
 * @author thomashug
 */
public enum QueryOperator {
    
    LessThan("LessThan", "{0} < {1}"),
    LessThanEquals("LessThanEquals", "{0} <= {1}"),
    GreaterThan("GreaterThan", "{0} > {1}"),
    GreaterThanEquals("GreaterThanEquals", "{0} >= {1}"),
    Like("Like", "{0} like {1}"),
    NotEqual("NotEqual", "{0} <> {1}"),
    Equal("Equal", "{0} = {1}"),
    Between("Between", "{0} between {1} and {2}", 2),
    IsNotNull("IsNotNull", "{0} IS NOT NULL", 0),
    IsNull("IsNull", "{0} IS NULL", 0);
    
    private final String expression;
    private final String jpql;
    private final int paramNum;
    
    private QueryOperator(String expression, String jpql) {
        this(expression, jpql, 1);
    }

    private QueryOperator(String expression, String jpql, int paramNum) {
        this.expression = expression;
        this.jpql = jpql;
        this.paramNum = paramNum;
    }

    public String getExpression() {
        return expression;
    }

    public String getJpql() {
        return jpql;
    }

    public int getParamNum() {
        return paramNum;
    }
    
}