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Type 4 JDBC driver for Apache Cassandra built on top of existing great libs like java driver from
DataStax. It supports Cassandra 2.x and above with improved SQL compatibility.
/**
* Copyright (C) 2015-2017, Zhichun Wu
*
* 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 com.github.cassandra.jdbc;
import com.google.common.base.Objects;
import com.google.common.base.Strings;
public class CassandraCqlStatement {
private final String cql;
// based on first line comments - the magic comment, for example:
// -- fetchSize=100, readTimeout=10
// select * from system.peers
// private final String inlineConfiguration = null;
// additional fields parsed from given SQL(not CQL), for example:
// select *, 1 as from system.peers
// private final SortedMap name2type;
private final CassandraCqlStmtConfiguration config;
private final Object[] parameters;
public CassandraCqlStatement(String cql, CassandraCqlStmtConfiguration config, Object... params) {
this.cql = Strings.nullToEmpty(cql);
this.config = config;
this.parameters = new Object[params == null ? 0 : params.length];
if (params != null) {
int index = 0;
for (Object p : params) {
this.parameters[index++] = p;
}
}
}
public String getCql() {
return this.cql;
}
public CassandraCqlStmtConfiguration getConfiguration() {
return this.config;
}
public boolean hasParameter() {
return this.parameters.length > 0;
}
public Object[] getParameters() {
Object[] params = new Object[parameters.length];
System.arraycopy(parameters, 0, params, 0, parameters.length);
return params;
}
@Override
public int hashCode() {
return Objects.hashCode(this.cql, this.config, this.parameters);
}
@Override
public boolean equals(Object obj) {
if (obj == null) {
return false;
}
if (getClass() != obj.getClass()) {
return false;
}
final CassandraCqlStatement other = (CassandraCqlStatement) obj;
return Objects.equal(this.cql, other.cql)
&& Objects.equal(this.config, other.config)
&& Objects.equal(this.parameters, other.parameters);
}
@Override
public String toString() {
return Objects.toStringHelper(this)
.addValue(this.cql)
.addValue(this.config)
.addValue(this.parameters)
.toString();
}
}