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/*
* Copyright 2015 Open Networking Laboratory
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.onosproject.ovsdb.rfc.notation;
import static com.google.common.base.MoreObjects.toStringHelper;
import static com.google.common.base.Preconditions.checkNotNull;
import java.util.Objects;
import org.onosproject.ovsdb.rfc.notation.json.ConditionSerializer;
import com.fasterxml.jackson.databind.annotation.JsonSerialize;
/**
* Condition is a 3-element JSON array of the form [column, function, value]
* that represents a test on a column value.
*/
@JsonSerialize(using = ConditionSerializer.class)
public final class Condition {
/**
* Function of Notation. Refer to RFC 7047 Section 5.1.
*/
public enum Function {
LESS_THAN("<"), LESS_THAN_OR_EQUALS("<="), EQUALS("=="),
NOT_EQUALS("!="), GREATER_THAN(">"), GREATER_THAN_OR_EQUALS(">="),
INCLUDES("includes"), EXCLUDES("excludes");
private final String function;
private Function(String function) {
this.function = function;
}
/**
* Returns the function for Function.
* @return the function
*/
public String function() {
return function;
}
}
private final String column;
private final Function function;
private final Object value;
/**
* Constructs a Condition object.
* @param column the column name
* @param function Function
* @param value column data
*/
public Condition(String column, Function function, Object value) {
checkNotNull(column, "column cannot be null");
checkNotNull(function, "function cannot be null");
checkNotNull(value, "value cannot be null");
this.column = column;
this.function = function;
this.value = value;
}
/**
* Returns column name.
* @return column name
*/
public String getColumn() {
return column;
}
/**
* Returns Function.
* @return Function
*/
public Function getFunction() {
return function;
}
/**
* Returns column data.
* @return column data
*/
public Object getValue() {
return value;
}
@Override
public int hashCode() {
return Objects.hash(column, function, value);
}
@Override
public boolean equals(Object obj) {
if (this == obj) {
return true;
}
if (obj instanceof Condition) {
final Condition other = (Condition) obj;
return Objects.equals(this.column, other.column)
&& Objects.equals(this.function, other.function)
&& Objects.equals(this.value, other.value);
}
return false;
}
@Override
public String toString() {
return toStringHelper(this).add("column", column)
.add("function", function).add("value", value).toString();
}
}
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