PartitionValue.java

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// distributed with this work for additional information
// regarding copyright ownership.  The ASF licenses this file
// to you 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
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// KIND, either express or implied.  See the License for the
// specific language governing permissions and limitations
// under the License.

package org.apache.doris.analysis;

import org.apache.doris.catalog.Type;
import org.apache.doris.common.AnalysisException;

import com.google.common.base.Objects;

public class PartitionValue {
    public static final PartitionValue MAX_VALUE = new PartitionValue();

    private String value;
    private boolean isNullPartition = false;

    private PartitionValue() {

    }

    public PartitionValue(String value) {
        this.value = value;
    }

    public PartitionValue(Long value) {
        this.value = value.toString();
    }

    public PartitionValue(String value, boolean isNullPartition) {
        this.value = value;
        this.isNullPartition = isNullPartition;
    }

    public LiteralExpr getValue(Type type) throws AnalysisException {
        if (isNullPartition) {
            return new NullLiteral();
        }
        if (isMax()) {
            return LiteralExpr.createInfinity(type, true);
        }
        return LiteralExpr.create(value, type);
    }

    public boolean isMax() {
        return this == MAX_VALUE;
    }

    public String getStringValue() {
        if (isMax()) {
            return "MAXVALUE";
        } else {
            return value;
        }
    }

    @Override
    public boolean equals(Object o) {
        if (this == o) {
            return true;
        }
        if (o == null || getClass() != o.getClass()) {
            return false;
        }
        PartitionValue that = (PartitionValue) o;
        return isNullPartition == that.isNullPartition
                && Objects.equal(value, that.value);
    }

    @Override
    public int hashCode() {
        return Objects.hashCode(value, isNullPartition);
    }

    public boolean isNullPartition() {
        return isNullPartition;
    }
}