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/*
* Copyright (C) 2020 Graylog, Inc.
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the Server Side Public License, version 1,
* as published by MongoDB, Inc.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* Server Side Public License for more details.
*
* You should have received a copy of the Server Side Public License
* along with this program. If not, see
* .
*/
package org.graylog.events.conditions;
import com.fasterxml.jackson.annotation.JsonCreator;
import com.fasterxml.jackson.annotation.JsonIgnore;
import com.fasterxml.jackson.annotation.JsonProperty;
import com.google.auto.value.AutoValue;
public class Expr {
private static final String LEFT = "left";
private static final String RIGHT = "right";
private static final String VALUE = "value";
private static final String REF = "ref";
private static final String CHILD = "child";
private static final String OPERATOR = "operator";
@AutoValue
public static abstract class True implements Expression {
static final String EXPR = "true";
@JsonCreator
public static True create(@JsonProperty(Expression.FIELD_EXPR) String expr) {
return new AutoValue_Expr_True(expr);
}
public static True create() {
return create(EXPR);
}
@JsonIgnore
@Override
public Boolean accept(ExpressionVisitor visitor) {
return visitor.visit(this);
}
}
@AutoValue
public static abstract class And implements Expression {
static final String EXPR = "&&";
@JsonProperty(LEFT)
public abstract Expression left();
@JsonProperty(RIGHT)
public abstract Expression right();
@JsonCreator
public static And create(@JsonProperty(Expression.FIELD_EXPR) String expr,
@JsonProperty(LEFT) Expression left,
@JsonProperty(RIGHT) Expression right) {
return new AutoValue_Expr_And(expr, left, right);
}
public static And create(Expression left, Expression right) {
return create(EXPR, left, right);
}
@JsonIgnore
@Override
public Boolean accept(ExpressionVisitor visitor) {
return visitor.visit(this);
}
}
@AutoValue
public static abstract class Or implements Expression {
static final String EXPR = "||";
@JsonProperty(LEFT)
public abstract Expression left();
@JsonProperty(RIGHT)
public abstract Expression right();
@JsonCreator
public static Or create(@JsonProperty(Expression.FIELD_EXPR) String expr,
@JsonProperty(LEFT) Expression left,
@JsonProperty(RIGHT) Expression right) {
return new AutoValue_Expr_Or(expr, left, right);
}
public static Or create(Expression left, Expression right) {
return create(EXPR, left, right);
}
@JsonIgnore
@Override
public Boolean accept(ExpressionVisitor visitor) {
return visitor.visit(this);
}
}
@AutoValue
public static abstract class Not implements Expression {
static final String EXPR = "!";
@JsonProperty(LEFT)
public abstract Expression left();
@JsonCreator
public static Not create(@JsonProperty(Expression.FIELD_EXPR) String expr,
@JsonProperty(LEFT) Expression left) {
return new AutoValue_Expr_Not(expr, left);
}
public static Not create(Expression left) {
return create(EXPR, left);
}
@JsonIgnore
@Override
public Boolean accept(ExpressionVisitor visitor) {
return visitor.visit(this);
}
}
@AutoValue
public static abstract class Equal implements Expression {
static final String EXPR = "==";
@JsonProperty(LEFT)
public abstract Expression left();
@JsonProperty(RIGHT)
public abstract Expression right();
@JsonCreator
public static Equal create(@JsonProperty(Expression.FIELD_EXPR) String expr,
@JsonProperty(LEFT) Expression left,
@JsonProperty(RIGHT) Expression right) {
return new AutoValue_Expr_Equal(expr, left, right);
}
public static Equal create(Expression left, Expression right) {
return create(EXPR, left, right);
}
@JsonIgnore
@Override
public Boolean accept(ExpressionVisitor visitor) {
return visitor.visit(this);
}
}
@AutoValue
public static abstract class Greater implements Expression {
static final String EXPR = ">";
@JsonProperty(LEFT)
public abstract Expression left();
@JsonProperty(RIGHT)
public abstract Expression right();
@JsonCreator
public static Greater create(@JsonProperty(Expression.FIELD_EXPR) String expr,
@JsonProperty(LEFT) Expression left,
@JsonProperty(RIGHT) Expression right) {
return new AutoValue_Expr_Greater(expr, left, right);
}
public static Greater create(Expression left, Expression right) {
return create(EXPR, left, right);
}
@JsonIgnore
@Override
public Boolean accept(ExpressionVisitor visitor) {
return visitor.visit(this);
}
}
@AutoValue
public static abstract class GreaterEqual implements Expression {
static final String EXPR = ">=";
@JsonProperty(LEFT)
public abstract Expression left();
@JsonProperty(RIGHT)
public abstract Expression right();
@JsonCreator
public static GreaterEqual create(@JsonProperty(Expression.FIELD_EXPR) String expr,
@JsonProperty(LEFT) Expression left,
@JsonProperty(RIGHT) Expression right) {
return new AutoValue_Expr_GreaterEqual(expr, left, right);
}
public static GreaterEqual create(Expression left, Expression right) {
return create(EXPR, left, right);
}
@JsonIgnore
@Override
public Boolean accept(ExpressionVisitor visitor) {
return visitor.visit(this);
}
}
@AutoValue
public static abstract class Lesser implements Expression {
static final String EXPR = "<";
@JsonProperty(LEFT)
public abstract Expression left();
@JsonProperty(RIGHT)
public abstract Expression right();
@JsonCreator
public static Lesser create(@JsonProperty(Expression.FIELD_EXPR) String expr,
@JsonProperty(LEFT) Expression left,
@JsonProperty(RIGHT) Expression right) {
return new AutoValue_Expr_Lesser(expr, left, right);
}
public static Lesser create(Expression left, Expression right) {
return create(EXPR, left, right);
}
@JsonIgnore
@Override
public Boolean accept(ExpressionVisitor visitor) {
return visitor.visit(this);
}
}
@AutoValue
public static abstract class LesserEqual implements Expression {
static final String EXPR = "<=";
@JsonProperty(LEFT)
public abstract Expression left();
@JsonProperty(RIGHT)
public abstract Expression right();
@JsonCreator
public static LesserEqual create(@JsonProperty(Expression.FIELD_EXPR) String expr,
@JsonProperty(LEFT) Expression left,
@JsonProperty(RIGHT) Expression right) {
return new AutoValue_Expr_LesserEqual(expr, left, right);
}
public static LesserEqual create(Expression left, Expression right) {
return create(EXPR, left, right);
}
@JsonIgnore
@Override
public Boolean accept(ExpressionVisitor visitor) {
return visitor.visit(this);
}
}
@AutoValue
public static abstract class NumberValue implements Expression {
static final String EXPR = "number";
@JsonProperty(VALUE)
public abstract double value();
@JsonCreator
public static NumberValue create(@JsonProperty(Expression.FIELD_EXPR) String expr,
@JsonProperty(VALUE) double value) {
return new AutoValue_Expr_NumberValue(expr, value);
}
public static NumberValue create(double value) {
return create(EXPR, value);
}
@JsonIgnore
@Override
public Double accept(ExpressionVisitor visitor) {
return visitor.visit(this);
}
}
@AutoValue
public static abstract class NumberReference implements Expression {
static final String EXPR = "number-ref";
@JsonProperty(REF)
public abstract String ref();
@JsonCreator
public static NumberReference create(@JsonProperty(Expression.FIELD_EXPR) String expr,
@JsonProperty(REF) String ref) {
return new AutoValue_Expr_NumberReference(expr, ref);
}
public static NumberReference create(String ref) {
return create(EXPR, ref);
}
@JsonIgnore
@Override
public Double accept(ExpressionVisitor visitor) {
return visitor.visit(this);
}
}
@AutoValue
public static abstract class Group implements Expression {
static final String EXPR = "group";
@JsonProperty(CHILD)
public abstract Expression child();
/* This operator is not used for evaluating expressions, but to document which operator is used in the expressions belonging to this group. */
@JsonProperty(OPERATOR)
public abstract String operator();
@JsonCreator
public static Group create(@JsonProperty(Expression.FIELD_EXPR) String expr,
@JsonProperty(CHILD) Expression child,
@JsonProperty(OPERATOR) String operator) {
return new AutoValue_Expr_Group(expr, child, operator);
}
public static Group create(Expression child, String operator) {
return create(EXPR, child, operator);
}
@JsonIgnore
@Override
public Boolean accept(ExpressionVisitor visitor) {
return visitor.visit(this);
}
}
}
