org.mariadb.jdbc.internal.common.query.MySQLParameterizedQuery Maven / Gradle / Ivy
/*
MariaDB Client for Java
Copyright (c) 2012 Monty Program Ab.
This library is free software; you can redistribute it and/or modify it under
the terms of the GNU Lesser General Public License as published by the Free
Software Foundation; either version 2.1 of the License, or (at your option)
any later version.
This library is distributed in the hope that it will be useful, but
WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License
for more details.
You should have received a copy of the GNU Lesser General Public License along
with this library; if not, write to Monty Program Ab [email protected].
This particular MariaDB Client for Java file is work
derived from a Drizzle-JDBC. Drizzle-JDBC file which is covered by subject to
the following copyright and notice provisions:
Copyright (c) 2009-2011, Marcus Eriksson
Redistribution and use in source and binary forms, with or without modification,
are permitted provided that the following conditions are met:
Redistributions of source code must retain the above copyright notice, this list
of conditions and the following disclaimer.
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list of conditions and the following disclaimer in the documentation and/or
other materials provided with the distribution.
Neither the name of the driver nor the names of its contributors may not be
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AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
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*/
package org.mariadb.jdbc.internal.common.query;
import org.mariadb.jdbc.internal.common.QueryException;
import org.mariadb.jdbc.internal.common.query.parameters.ParameterHolder;
import java.io.IOException;
import java.io.OutputStream;
import java.io.UnsupportedEncodingException;
import java.nio.charset.StandardCharsets;
import java.util.List;
import static org.mariadb.jdbc.internal.common.Utils.createQueryParts;
public class MySQLParameterizedQuery implements ParameterizedQuery {
private ParameterHolder[] parameters;
private int paramCount;
private String query;
private byte[][] queryPartsArray;
private byte[] rewriteFirstPart = null;
private byte[] rewriteRepeatLastPart = null;
private byte[] rewriteNotRepeatLastPart = null;
public MySQLParameterizedQuery(String query, boolean noBackslashEscapes, int rewriteOffset) {
try {
this.query = query;
List queryParts = createQueryParts(query, noBackslashEscapes);
if (rewriteOffset != -1) {
rewriteFirstPart = queryParts.get(0).substring(rewriteOffset + 1).getBytes("UTF-8");
String lastPart = queryParts.get(queryParts.size() - 1);
if (lastPart.indexOf(")") != -1) {
rewriteRepeatLastPart = lastPart.substring(0, lastPart.indexOf(")")).getBytes("UTF-8");
rewriteNotRepeatLastPart = lastPart.substring(lastPart.indexOf(")") + 1).getBytes("UTF-8");
} else {
rewriteRepeatLastPart = lastPart.getBytes("UTF-8");
rewriteNotRepeatLastPart = new byte[0];
}
}
queryPartsArray = new byte[queryParts.size()][];
for (int i = 0; i < queryParts.size(); i++) {
queryPartsArray[i] = queryParts.get(i).getBytes("UTF-8");
}
paramCount = queryParts.size() - 1;
parameters = new ParameterHolder[paramCount];
} catch (UnsupportedEncodingException u) {}
}
private MySQLParameterizedQuery() {
}
public MySQLParameterizedQuery cloneQuery() {
MySQLParameterizedQuery q = new MySQLParameterizedQuery();
q.parameters = new ParameterHolder[parameters.length];
for (int i = 0; i < parameters.length; i++) {
q.parameters[i] = parameters[i];
}
q.paramCount = paramCount;
q.query = query;
q.queryPartsArray = queryPartsArray;
q.rewriteFirstPart = rewriteFirstPart;
q.rewriteRepeatLastPart = rewriteRepeatLastPart;
q.rewriteNotRepeatLastPart = rewriteNotRepeatLastPart;
return q;
}
public void setParameter(final int position, final ParameterHolder parameter) throws IllegalParameterException {
if (position >= 0 && position < paramCount) {
parameters[position] = parameter;
} else {
throw new IllegalParameterException("No '?' on that position");
}
}
public ParameterHolder[] getParameters() {
return parameters;
}
public void clearParameters() {
this.parameters = new ParameterHolder[paramCount];
}
public void validate() throws QueryException {
if (containsNull(parameters)) {
throw new QueryException("You need to set exactly " + paramCount + " parameters on the prepared statement");
}
}
public void writeTo(final OutputStream os) throws IOException, QueryException {
if (queryPartsArray.length == 0) {
throw new AssertionError("Invalid query, queryParts was empty");
}
os.write(queryPartsArray[0]);
for (int i = 1; i < queryPartsArray.length; i++) {
parameters[i - 1].writeTo(os);
if (queryPartsArray[i].length != 0)
os.write(queryPartsArray[i]);
}
}
public void writeFirstRewritePart(final OutputStream os) throws IOException, QueryException {
if (queryPartsArray.length == 0) {
throw new AssertionError("Invalid query, queryParts was empty");
}
for (int i = 0; i < queryPartsArray.length - 1; i++) {
os.write(queryPartsArray[i]);
parameters[i].writeTo(os);
}
if (rewriteRepeatLastPart != null) os.write(rewriteRepeatLastPart);
os.write(41); // ")" in UTF-8
}
public void writeLastRewritePart(final OutputStream os) throws IOException, QueryException {
if (rewriteNotRepeatLastPart != null) {
os.write(rewriteNotRepeatLastPart);
}
}
public void writeToRewritablePart(final OutputStream os, int rewriteOffset) throws IOException, QueryException {
if (queryPartsArray.length == 0) {
throw new AssertionError("Invalid query, queryParts was empty");
}
os.write(new byte[]{44, 40}); //",(" in UTF-8
os.write(rewriteFirstPart);
for (int i = 0; i < parameters.length; i++) {
parameters[i].writeTo(os);
if (i < parameters.length - 1)
os.write(queryPartsArray[i + 1]);
else os.write(rewriteRepeatLastPart);
}
os.write(41); // ")" in UTF-8
}
private boolean containsNull(ParameterHolder[] parameters) {
for (ParameterHolder ph : parameters) {
if (ph == null) {
return true;
}
}
return false;
}
public String getQuery() {
return query;
}
public byte[][] getQueryPartsArray() {
return queryPartsArray;
}
public QueryType getQueryType() {
return QueryType.classifyQuery(query);
}
public int getParamCount() {
return paramCount;
}
public String toString() {
StringBuffer sb = new StringBuffer("sql : '" + query + "'");
if (parameters.length > 0) {
sb.append(", parameters : [");
for (int i = 0; i < parameters.length; i++) {
if (parameters[i] == null) {
sb.append("null");
} else {
sb.append(parameters[i].toString());
}
if (i != parameters.length - 1) {
sb.append(",");
}
}
sb.append("]");
}
return sb.toString();
}
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