src/main/java/de/uniks/networkparser/ext/sql/SQLStatement.java
package de.uniks.networkparser.ext.sql;
/*
NetworkParser
The MIT License
Copyright (c) 2010-2016 Stefan Lindel https://www.github.com/fujaba/NetworkParser/
Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:
The above copyright notice and this permission notice shall be included in
all copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
THE SOFTWARE.
*/
import java.util.Iterator;
import java.util.Map.Entry;
import de.uniks.networkparser.list.AbstractArray;
import de.uniks.networkparser.list.SimpleIterator;
import de.uniks.networkparser.list.SimpleIteratorSet;
import de.uniks.networkparser.list.SimpleKeyValueList;
import de.uniks.networkparser.list.SimpleList;
import de.uniks.networkparser.list.SimpleSet;
public class SQLStatement {
public static final String ID = "_ID";
public static final String VALUE = "VALUE";
public static final String PROP = "PROP";
protected SQLCommand command;
protected String table;
private boolean autoStatement;
private boolean enable = true;
private AbstractArray<?> values;
private SimpleKeyValueList<String, Object> conditions;
public static final String SPACE = " ";
public static final String EMPTY = "";
public static final String QUOTE = "'";
private static final String DRIVER = "DRIVER";
private static final String DATABASE = "DATABASE";
public SQLStatement(SQLCommand command) {
this.command = command;
}
public SQLStatement(SQLCommand command, String table) {
this.command = command;
this.table = table;
}
public SQLStatement(SQLCommand command, String table, String id) {
this.command = command;
this.table = table;
this.with(ID, id);
}
public SQLCommand getCommand() {
return command;
}
public SQLStatement withCommand(SQLCommand command) {
this.command = command;
return this;
}
public String getTable() {
return table;
}
public SQLStatement withTable(String value) {
this.table = value;
return this;
}
public boolean isAutoStatement() {
return autoStatement;
}
public SQLStatement withAutoStatement(boolean autoStatement) {
this.autoStatement = autoStatement;
return this;
}
public boolean isEnable() {
return enable;
}
public SQLStatement withEnable(boolean enable) {
this.enable = enable;
return this;
}
public boolean autoDisable() {
if (isAutoStatement()) {
this.withEnable(false);
return true;
}
return false;
}
public static SQLStatement connect(String driver, String database, String url) {
SQLStatement connectStatement = new SQLStatement(SQLCommand.CONNECTION, url);
connectStatement.with(DRIVER, driver);
connectStatement.with(DATABASE, database);
return connectStatement;
}
public static SQLStatement update(String table, String id, String property, Object newValue) {
SQLStatement updateStatement = new SQLStatement(SQLCommand.UPDATE, table);
updateStatement.withCondition(ID, id);
updateStatement.withValues(property, newValue);
return updateStatement;
}
public SQLStatement with(String key, Object value) {
if (values == null) {
values = new SimpleKeyValueList<String, Object>();
}
if (values instanceof SimpleKeyValueList<?, ?>) {
((SimpleKeyValueList<?, ?>) values).withKeyValue(key, value);
}
return this;
}
public SQLStatement without(String key) {
if (values != null && values instanceof SimpleKeyValueList<?, ?>) {
((SimpleKeyValueList<?, ?>) values).without(key);
}
return this;
}
public SQLStatement withValues(Object... values) {
if (values == null) {
return this;
}
if (this.values == null) {
this.values = new SimpleList<Object>();
}
if (this.values instanceof SimpleList<?> == false) {
return this;
}
SimpleList<?> list = (SimpleList<?>) this.values;
for (Object item : values) {
list.with(item);
}
return this;
}
public SQLStatement withCondition(String key, Object value) {
if (conditions == null) {
conditions = new SimpleKeyValueList<String, Object>();
}
conditions.add(key, value);
return this;
}
@Override
public String toString() {
/* CONNECTION */
if (command == SQLCommand.CONNECTION) {
String driver = "";
String database = "";
if (values instanceof SimpleKeyValueList<?, ?>) {
SimpleKeyValueList<?, ?> items = (SimpleKeyValueList<?, ?>) values;
driver = (String) items.getValue(DRIVER);
database = (String) items.getValue(DATABASE);
}
return driver + ":" + database + ":" + this.table;
}
StringBuilder sb = new StringBuilder();
boolean first = true;
/* ADD COMMAND */
sb.append(command.getValue()).append(SPACE);
/* SELECT STATEMENT */
if (command == SQLCommand.SELECT) {
if (values instanceof SimpleList<?>) {
SimpleIterator<String> i = new SimpleIterator<String>(values);
String item = null;
for (; i.hasNext();) {
item = i.next();
if (first == false) {
sb.append(", ");
}
first = false;
sb.append("\"" + item + "\"");
}
sb.append(" FROM ");
sb.append(this.table);
}
addCondition(sb);
return sb.toString();
}
/* All Other Statements */
sb.append(this.table).append(SPACE);
if (command == SQLCommand.DROPTABLE) {
return sb.toString();
}
if (command == SQLCommand.DELETE) {
addCondition(sb);
return sb.toString();
}
if (command == SQLCommand.CREATETABLE) {
if (values instanceof SimpleKeyValueList<?, ?>) {
sb.append("(");
SimpleIteratorSet<String, Object> i = new SimpleIteratorSet<String, Object>(values);
Entry<String, Object> item = null;
for (; i.hasNext();) {
item = i.next();
if (first == false) {
sb.append(", ");
} else {
first = false;
}
sb.append("'" + item.getKey() + "'").append(" ").append(item.getValue());
}
sb.append(")");
}
return sb.toString();
}
if (command == SQLCommand.INSERT) {
if (values.size() > 0) {
if (values instanceof SimpleKeyValueList<?, ?>) {
SimpleIteratorSet<String, Object> i = new SimpleIteratorSet<String, Object>(values);
Entry<String, Object> item = i.next();
StringBuilder values = new StringBuilder();
values.append(QUOTE).append(item.getValue()).append(QUOTE);
if (EMPTY.equals(item.getKey())) {
for (; i.hasNext();) {
item = i.next();
values.append(", '").append(i.next().getValue()).append(QUOTE);
}
} else {
StringBuilder keys = new StringBuilder();
keys.append(item.getKey());
for (; i.hasNext();) {
item = i.next();
keys.append(", ").append(item.getKey());
values.append(", '");
convertValue(values, item.getValue());
values.append(QUOTE);
}
sb.append("(").append(keys.toString()).append(") ");
}
sb.append("values(").append(values.toString()).append(")");
}
}
return sb.toString();
}
if (command == SQLCommand.UPDATE) {
if (values instanceof SimpleKeyValueList<?, ?>) {
sb.append("SET ");
SimpleIteratorSet<String, Object> i = new SimpleIteratorSet<String, Object>(values);
Entry<String, Object> item = null;
for (; i.hasNext();) {
item = i.next();
if (first == false) {
sb.append(", ");
}
first = false;
sb.append(item.getKey()).append("=").append(QUOTE);
convertValue(sb, item.getValue());
sb.append(QUOTE);
}
addCondition(sb);
}
}
return sb.toString();
}
private void convertValue(StringBuilder sb, Object value) {
if (value == null) {
return;
}
if (value instanceof SimpleSet<?>) {
SimpleSet<?> collection = (SimpleSet<?>) value;
sb.append('{');
for (Iterator<?> i = collection.iterator(); i.hasNext();) {
sb.append(i.next().toString());
if (i.hasNext()) {
sb.append(", ");
}
}
sb.append('}');
return;
}
sb.append(value.toString());
}
private void addCondition(StringBuilder sb) {
if (conditions != null) {
boolean first = true;
sb.append(" WHERE ");
for (Iterator<Entry<String, Object>> i = conditions.entrySet().iterator(); i.hasNext();) {
Entry<String, Object> item = i.next();
if (first == false) {
sb.append(", ");
} else {
first = false;
}
if (item.getValue() instanceof SimpleList<?>) {
SimpleList<?> values = (SimpleList<?>) item.getValue();
sb.append(item.getKey()).append(SPACE).append("IN").append(SPACE).append("(");
boolean newFirst = true;
for (Object object : values) {
if (newFirst == false) {
sb.append(", ");
} else {
newFirst = false;
}
sb.append("'" + object + "'");
}
sb.append(")");
} else {
sb.append(item.getKey()).append("=").append("'" + item.getValue() + "'");
}
}
}
}
public AbstractArray<?> getValues() {
return values;
}
public String getPrimaryId() {
SimpleIteratorSet<String, Object> i;
if (command == SQLCommand.SELECT) {
i = new SimpleIteratorSet<String, Object>(conditions);
} else {
i = new SimpleIteratorSet<String, Object>(values);
}
Entry<String, Object> item = null;
for (; i.hasNext();) {
item = i.next();
if (ID.equals(item.getKey())) {
return (String) item.getValue();
}
}
if (command == SQLCommand.UPDATE) {
i = new SimpleIteratorSet<String, Object>(conditions);
for (; i.hasNext();) {
item = i.next();
if (ID.equals(item.getKey())) {
return (String) item.getValue();
}
}
}
return null;
}
public SQLStatement withoutCondition(String key) {
if (conditions != null) {
conditions.remove(key);
}
return this;
}
}