org.elasticsearch.xpack.core.security.authc.support.mapper.expressiondsl.ExceptExpression Maven / Gradle / Ivy
/*
* Copyright Elasticsearch B.V. and/or licensed to Elasticsearch B.V. under one
* or more contributor license agreements. Licensed under the Elastic License
* 2.0; you may not use this file except in compliance with the Elastic License
* 2.0.
*/
package org.elasticsearch.xpack.core.security.authc.support.mapper.expressiondsl;
import org.elasticsearch.common.io.stream.StreamInput;
import org.elasticsearch.common.io.stream.StreamOutput;
import org.elasticsearch.common.xcontent.XContentBuilder;
import java.io.IOException;
/**
* A negating expression. That is, this expression evaluates to true
if-and-only-if
* its delegate expression evaluate to false
.
* Syntactically, except expressions are intended to be children of all
* expressions ({@link AllExpression}).
*/
public final class ExceptExpression implements RoleMapperExpression {
public static final String NAME = "except";
private final RoleMapperExpression expression;
ExceptExpression(RoleMapperExpression expression) {
assert expression != null;
this.expression = expression;
}
public ExceptExpression(StreamInput in) throws IOException {
this(ExpressionParser.readExpression(in));
}
@Override
public void writeTo(StreamOutput out) throws IOException {
ExpressionParser.writeExpression(expression, out);
}
@Override
public String getWriteableName() {
return NAME;
}
@Override
public boolean match(ExpressionModel model) {
return expression.match(model) == false;
}
@Override
public boolean equals(Object o) {
if (this == o) {
return true;
}
if (o == null || getClass() != o.getClass()) {
return false;
}
final ExceptExpression that = (ExceptExpression) o;
return this.expression.equals(that.expression);
}
@Override
public int hashCode() {
return expression.hashCode();
}
RoleMapperExpression getInnerExpression() {
return expression;
}
@Override
public XContentBuilder toXContent(XContentBuilder builder, Params params) throws IOException {
builder.startObject();
builder.field(ExpressionParser.Fields.EXCEPT.getPreferredName());
expression.toXContent(builder, params);
return builder.endObject();
}
}