com.facebook.presto.spi.relation.RowExpression Maven / Gradle / Ivy

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/*
 * 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 com.facebook.presto.spi.relation;

import com.facebook.presto.common.type.Type;
import com.fasterxml.jackson.annotation.JsonSubTypes;
import com.fasterxml.jackson.annotation.JsonTypeInfo;

@JsonTypeInfo(
        use = JsonTypeInfo.Id.NAME,
        include = JsonTypeInfo.As.PROPERTY,
        property = "@type")
@JsonSubTypes({
        @JsonSubTypes.Type(value = CallExpression.class, name = "call"),
        @JsonSubTypes.Type(value = SpecialFormExpression.class, name = "special"),
        @JsonSubTypes.Type(value = LambdaDefinitionExpression.class, name = "lambda"),
        @JsonSubTypes.Type(value = InputReferenceExpression.class, name = "input"),
        @JsonSubTypes.Type(value = VariableReferenceExpression.class, name = "variable"),
        @JsonSubTypes.Type(value = ConstantExpression.class, name = "constant")})
public abstract class RowExpression
{
    public abstract Type getType();

    @Override
    public abstract boolean equals(Object other);

    @Override
    public abstract int hashCode();

    @Override
    public abstract String toString();

    public abstract  R accept(RowExpressionVisitor visitor, C context);
}