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Java JDBC driver for MogDB
/*
* Copyright (c) 2003, PostgreSQL Global Development Group
* See the LICENSE file in the project root for more information.
*/
package io.mogdb.core;
import io.mogdb.util.CanEstimateSize;
/**
* This class is used as a cache key for simple statements that have no "returning columns".
* Prepared statements that have no returning columns use just {@code String sql} as a key.
* Simple and Prepared statements that have returning columns use {@link QueryWithReturningColumnsKey}
* as a cache key.
*/
class BaseQueryKey implements CanEstimateSize {
public final String sql;
public final boolean isParameterized;
public final boolean escapeProcessing;
BaseQueryKey(String sql, boolean isParameterized, boolean escapeProcessing) {
this.sql = sql;
this.isParameterized = isParameterized;
this.escapeProcessing = escapeProcessing;
}
@Override
public String toString() {
return "BaseQueryKey{"
+ "sql='" + sql + '\''
+ ", isParameterized=" + isParameterized
+ ", escapeProcessing=" + escapeProcessing
+ '}';
}
@Override
public long getSize() {
if (sql == null) { // just in case
return 16;
}
return 16 + sql.length() * 2L; // 2 bytes per char, revise with Java 9's compact strings
}
@Override
public boolean equals(Object o) {
if (this == o) {
return true;
}
if (o == null || getClass() != o.getClass()) {
return false;
}
BaseQueryKey that = (BaseQueryKey) o;
if (isParameterized != that.isParameterized) {
return false;
}
if (escapeProcessing != that.escapeProcessing) {
return false;
}
return sql != null ? sql.equals(that.sql) : that.sql == null;
}
@Override
public int hashCode() {
int result = sql != null ? sql.hashCode() : 0;
result = 31 * result + (isParameterized ? 1 : 0);
result = 31 * result + (escapeProcessing ? 1 : 0);
return result;
}
}