io.milvus.param.dml.DeleteParam Maven / Gradle / Ivy

Go to download
Show more of this group Show more artifacts with this name
Show all versions of milvus-sdk-java Show documentation
Java SDK for Milvus, a distributed high-performance vector search engine. update grpc to 1.42.1 update protobuf to 3.19.1
There is a newer version: 2.2.2.1
Show newest version
/*
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * 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
 * "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 io.milvus.param.dml;

import io.milvus.exception.ParamException;
import io.milvus.param.ParamUtils;

import lombok.Getter;
import lombok.NonNull;

/**
 * Parameters for delete interface.
 */
@Getter
public class DeleteParam {
    private final String collectionName;
    private final String partitionName;
    private final String expr;

    private DeleteParam(@NonNull Builder builder) {
        this.collectionName = builder.collectionName;
        this.partitionName = builder.partitionName;
        this.expr = builder.expr;
    }

    public static Builder newBuilder() {
        return new Builder();
    }

    /**
     * Builder for {@link DeleteParam} class.
     */
    public static class Builder {
        private String collectionName;
        private String partitionName = "";
        private String expr;

        private Builder() {
        }

        /**
         * Sets the collection name. Collection name cannot be empty or null.
         *
         * @param collectionName collection name
         * @return Builder
         */
        public Builder withCollectionName(@NonNull String collectionName) {
            this.collectionName = collectionName;
            return this;
        }

        /**
         * Sets the partition name (Optional).
         *
         * @param partitionName partition name
         * @return Builder
         */
        public Builder withPartitionName(@NonNull String partitionName) {
            this.partitionName = partitionName;
            return this;
        }

        /**
         * Sets the expression to filter out entities to be deleted.
         * @see Boolean Expression Rules
         *
         * @param expr filtering expression
         * @return Builder
         */
        public Builder withExpr(@NonNull String expr) {
            this.expr = expr;
            return this;
        }

        /**
         * Verifies parameters and creates a new {@link DeleteParam} instance.
         *
         * @return {@link DeleteParam}
         */
        public DeleteParam build() throws ParamException {
            ParamUtils.CheckNullEmptyString(collectionName, "Collection name");
            ParamUtils.CheckNullEmptyString(expr, "Expression");

            return new DeleteParam(this);
        }
    }

    /**
     * Constructs a String by {@link DeleteParam} instance.
     *
     * @return String
     */
    @Override
    public String toString() {
        return "DeleteParam{" +
                "collectionName='" + collectionName + '\'' +
                ", partitionName='" + partitionName + '\'' +
                ", expr='" + expr + '\'' +
                '}';
    }
}