<commit_before>/*******************************************************************************
 * Copyright (c) 1998, 2008 Oracle. All rights reserved.
 * This program and the accompanying materials are made available under the 
 * terms of the Eclipse Public License v1.0 and Eclipse Distribution License v. 1.0 
 * which accompanies this distribution. 
 * The Eclipse Public License is available at http://www.eclipse.org/legal/epl-v10.html
 * and the Eclipse Distribution License is available at 
 * http://www.eclipse.org/org/documents/edl-v10.php.
 *
 * Contributors:
 *     Oracle - initial API and implementation from Oracle TopLink
 ******************************************************************************/  
package org.eclipse.persistence.platform.database;

import java.io.*;
import java.util.*;
import org.eclipse.persistence.exceptions.ValidationException;
import org.eclipse.persistence.expressions.ExpressionOperator;
import org.eclipse.persistence.internal.databaseaccess.FieldTypeDefinition;
import org.eclipse.persistence.internal.expressions.FunctionExpression;
import org.eclipse.persistence.internal.helper.*;
import org.eclipse.persistence.internal.sessions.AbstractSession;
import org.eclipse.persistence.queries.StoredProcedureCall;
import org.eclipse.persistence.queries.ValueReadQuery;

/**
 * <p><b>Purpose</b>: Provides MySQL specific behavior.
 * <p><b>Responsibilities</b>:<ul>
 * <li> Native SQL for Date, Time, & Timestamp.
 * <li> Native sequencing.
 * <li> Mapping of class types to database types for the schema framework.
 * <li> Pessimistic locking.
 *  <li> Platform specific operators.
 * </ul>
 *
 * @since OracleAS TopLink 10<i>g</i> (10.1.3)
 */
public class MySQLPlatform extends DatabasePlatform {

    public MySQLPlatform(){
        super();
        this.pingSQL = "SELECT 1";
    }
    
    /**
     * Appends an MySQL specific date if usesNativeSQL is true otherwise use the ODBC format.
     * Native FORMAT: 'YYYY-MM-DD'
     */
    protected void appendDate(java.sql.Date date, Writer writer) throws IOException {
        if (usesNativeSQL()) {
            writer.write("'");
            writer.write(Helper.printDate(date));
            writer.write("'");
        } else {
            super.appendDate(date, writer);
        }
    }

    /**
     * Appends an MySQL specific time if usesNativeSQL is true otherwise use the ODBC format.
     * Native FORMAT: 'HH:MM:SS'.
     */
    protected void appendTime(java.sql.Time time, Writer writer) throws IOException {
        if (usesNativeSQL()) {
            writer.write("'");
            writer.write(Helper.printTime(time));
            writer.write("'");
        } else {
            super.appendTime(time, writer);
        }
    }

    /**
     * Appends an MySQL specific Timestamp, if usesNativeSQL is true otherwise use the ODBC format.
     * Native Format: 'YYYY-MM-DD HH:MM:SS' 
     */
    protected void appendTimestamp(java.sql.Timestamp timestamp, Writer writer) throws IOException {
        if (usesNativeSQL()) {
            writer.write("'");
            writer.write(Helper.printTimestampWithoutNanos(timestamp));
            writer.write("'");
        } else {
            super.appendTimestamp(timestamp, writer);
        }
    }

    /**
     * Appends an MySQL specific Timestamp, if usesNativeSQL is true otherwise use the ODBC format.
     * Native Format: 'YYYY-MM-DD HH:MM:SS'
     */
    protected void appendCalendar(Calendar calendar, Writer writer) throws IOException {
        if (usesNativeSQL()) {
            writer.write("'");
            writer.write(Helper.printCalendarWithoutNanos(calendar));
            writer.write("'");
        } else {
            super.appendCalendar(calendar, writer);
        }
    }

    /**
     * Return the mapping of class types to database types for the schema framework.
     */
    protected Hashtable buildFieldTypes() {
        Hashtable fieldTypeMapping;

        fieldTypeMapping = new Hashtable();
        fieldTypeMapping.put(Boolean.class, new FieldTypeDefinition("TINYINT(1) default 0", false));

        fieldTypeMapping.put(Integer.class, new FieldTypeDefinition("INTEGER", false));
        fieldTypeMapping.put(Long.class, new FieldTypeDefinition("BIGINT", false));
        fieldTypeMapping.put(Float.class, new FieldTypeDefinition("FLOAT", false));
        fieldTypeMapping.put(Double.class, new FieldTypeDefinition("DOUBLE", false));
        fieldTypeMapping.put(Short.class, new FieldTypeDefinition("SMALLINT", false));
        fieldTypeMapping.put(Byte.class, new FieldTypeDefinition("TINYINT", false));
        fieldTypeMapping.put(java.math.BigInteger.class, new FieldTypeDefinition("BIGINT", false));
        fieldTypeMapping.put(java.math.BigDecimal.class, new FieldTypeDefinition("DECIMAL",38));
        fieldTypeMapping.put(Number.class, new FieldTypeDefinition("DECIMAL",38));

        fieldTypeMapping.put(String.class, new FieldTypeDefinition("VARCHAR", 255));
        fieldTypeMapping.put(Character.class, new FieldTypeDefinition("CHAR", 1));

        fieldTypeMapping.put(Byte[].class, new FieldTypeDefinition("BLOB", 64000));
        fieldTypeMapping.put(Character[].class, new FieldTypeDefinition("TEXT", 64000));
        fieldTypeMapping.put(byte[].class, new FieldTypeDefinition("BLOB", 64000));
        fieldTypeMapping.put(char[].class, new FieldTypeDefinition("TEXT", 64000));
        fieldTypeMapping.put(java.sql.Blob.class, new FieldTypeDefinition("BLOB", 64000));
        fieldTypeMapping.put(java.sql.Clob.class, new FieldTypeDefinition("TEXT", 64000));
        
        fieldTypeMapping.put(java.sql.Date.class, new FieldTypeDefinition("DATE", false));
        fieldTypeMapping.put(java.sql.Time.class, new FieldTypeDefinition("TIME", false));
        fieldTypeMapping.put(java.sql.Timestamp.class, new FieldTypeDefinition("DATETIME", false));

        return fieldTypeMapping;
    }

    /**
     * INTERNAL:
     * Build the identity query for native sequencing.
     */
    public ValueReadQuery buildSelectQueryForIdentity() {
        ValueReadQuery selectQuery = new ValueReadQuery();
        StringWriter writer = new StringWriter();
        writer.write("SELECT LAST_INSERT_ID()");
        selectQuery.setSQLString(writer.toString());
        return selectQuery;
    }

    /**
     * Return the proc syntax for this platform.
     */
    @Override
    public String buildProcedureCallString(StoredProcedureCall call, AbstractSession session) {
        return "{ " + super.buildProcedureCallString(call, session);
    }
    
    /**
     * INTERNAL:
     * Used for constraint deletion.
     */
    public String getConstraintDeletionString() {
        return " DROP FOREIGN KEY ";
    }

    /**
     * Used for stored function calls.
     */
    @Override
    public String getFunctionCallHeader() {
        return "? " + getAssignmentString() + getProcedureCallHeader();
            // different order -  CALL clause ^^^ comes AFTER assignment operator
    }

    /**
     * Used for sp calls.
     */
    @Override
    public String getProcedureCallTail() {
        return " }"; // case-sensitive
    }
    
    /**
     * INTERNAL:
     * Used for pessimistic locking.
     */
    public String getSelectForUpdateString() {
        return " FOR UPDATE";
    }
    
    /**
     * INTERNAL:
     * This method returns the query to select the timestamp
     * from the server for MySQL.
     */
    public ValueReadQuery getTimestampQuery() {
        if (timestampQuery == null) {
            timestampQuery = new ValueReadQuery();
            timestampQuery.setSQLString("SELECT NOW()");
        }
        return timestampQuery;
    }

    /**
     * Answers whether platform is MySQL.
     */
    public boolean isMySQL() {
        return true;
    }

    /**
     * Initialize any platform-specific operators.
     */
    protected void initializePlatformOperators() {
        super.initializePlatformOperators();
        addOperator(logOperator());
        addOperator(ExpressionOperator.simpleTwoArgumentFunction(ExpressionOperator.Atan2, "ATAN2"));
        addOperator(ExpressionOperator.simpleTwoArgumentFunction(ExpressionOperator.Concat, "CONCAT"));
        addOperator(toNumberOperator());
        addOperator(toCharOperator());
        addOperator(toDateOperator());
        addOperator(dateToStringOperator());
        addOperator(ExpressionOperator.simpleTwoArgumentFunction(ExpressionOperator.Nvl, "IFNULL"));
        addOperator(ExpressionOperator.simpleTwoArgumentFunction(ExpressionOperator.Trunc, "TRUNCATE"));
        addOperator(leftTrim2());
        addOperator(rightTrim2());
    }

    /**
     * INTERNAL:
     * Create the 10 based log operator for this platform.
     */
    protected ExpressionOperator logOperator() {
        ExpressionOperator result = new ExpressionOperator();
        result.setSelector(ExpressionOperator.Log);
        Vector v = org.eclipse.persistence.internal.helper.NonSynchronizedVector.newInstance(2);
        v.addElement("LOG(");
        v.addElement(", 10)");
        result.printsAs(v);<commit_msg>Bug 248616 - added missed MySQL support for bug fix<commit_after>/*******************************************************************************
 * Copyright (c) 1998, 2008 Oracle. All rights reserved.
 * This program and the accompanying materials are made available under the 
 * terms of the Eclipse Public License v1.0 and Eclipse Distribution License v. 1.0 
 * which accompanies this distribution. 
 * The Eclipse Public License is available at http://www.eclipse.org/legal/epl-v10.html
 * and the Eclipse Distribution License is available at 
 * http://www.eclipse.org/org/documents/edl-v10.php.
 *
 * Contributors:
 *     Oracle - initial API and implementation from Oracle TopLink
 ******************************************************************************/  
package org.eclipse.persistence.platform.database;

import java.io.*;
import java.util.*;
import org.eclipse.persistence.exceptions.ValidationException;
import org.eclipse.persistence.expressions.ExpressionOperator;
import org.eclipse.persistence.internal.databaseaccess.FieldTypeDefinition;
import org.eclipse.persistence.internal.expressions.FunctionExpression;
import org.eclipse.persistence.internal.helper.*;
import org.eclipse.persistence.internal.sessions.AbstractSession;
import org.eclipse.persistence.queries.StoredProcedureCall;
import org.eclipse.persistence.queries.ValueReadQuery;

/**
 * <p><b>Purpose</b>: Provides MySQL specific behavior.
 * <p><b>Responsibilities</b>:<ul>
 * <li> Native SQL for Date, Time, & Timestamp.
 * <li> Native sequencing.
 * <li> Mapping of class types to database types for the schema framework.
 * <li> Pessimistic locking.
 *  <li> Platform specific operators.
 * </ul>
 *
 * @since OracleAS TopLink 10<i>g</i> (10.1.3)
 */
public class MySQLPlatform extends DatabasePlatform {

    public MySQLPlatform(){
        super();
        this.pingSQL = "SELECT 1";
    }
    
    /**
     * Appends an MySQL specific date if usesNativeSQL is true otherwise use the ODBC format.
     * Native FORMAT: 'YYYY-MM-DD'
     */
    protected void appendDate(java.sql.Date date, Writer writer) throws IOException {
        if (usesNativeSQL()) {
            writer.write("'");
            writer.write(Helper.printDate(date));
            writer.write("'");
        } else {
            super.appendDate(date, writer);
        }
    }

    /**
     * Appends an MySQL specific time if usesNativeSQL is true otherwise use the ODBC format.
     * Native FORMAT: 'HH:MM:SS'.
     */
    protected void appendTime(java.sql.Time time, Writer writer) throws IOException {
        if (usesNativeSQL()) {
            writer.write("'");
            writer.write(Helper.printTime(time));
            writer.write("'");
        } else {
            super.appendTime(time, writer);
        }
    }

    /**
     * Appends an MySQL specific Timestamp, if usesNativeSQL is true otherwise use the ODBC format.
     * Native Format: 'YYYY-MM-DD HH:MM:SS' 
     */
    protected void appendTimestamp(java.sql.Timestamp timestamp, Writer writer) throws IOException {
        if (usesNativeSQL()) {
            writer.write("'");
            writer.write(Helper.printTimestampWithoutNanos(timestamp));
            writer.write("'");
        } else {
            super.appendTimestamp(timestamp, writer);
        }
    }

    /**
     * Appends an MySQL specific Timestamp, if usesNativeSQL is true otherwise use the ODBC format.
     * Native Format: 'YYYY-MM-DD HH:MM:SS'
     */
    protected void appendCalendar(Calendar calendar, Writer writer) throws IOException {
        if (usesNativeSQL()) {
            writer.write("'");
            writer.write(Helper.printCalendarWithoutNanos(calendar));
            writer.write("'");
        } else {
            super.appendCalendar(calendar, writer);
        }
    }

    /**
     * Return the mapping of class types to database types for the schema framework.
     */
    protected Hashtable buildFieldTypes() {
        Hashtable fieldTypeMapping;

        fieldTypeMapping = new Hashtable();
        fieldTypeMapping.put(Boolean.class, new FieldTypeDefinition("TINYINT(1) default 0", false));

        fieldTypeMapping.put(Integer.class, new FieldTypeDefinition("INTEGER", false));
        fieldTypeMapping.put(Long.class, new FieldTypeDefinition("BIGINT", false));
        fieldTypeMapping.put(Float.class, new FieldTypeDefinition("FLOAT", false));
        fieldTypeMapping.put(Double.class, new FieldTypeDefinition("DOUBLE", false));
        fieldTypeMapping.put(Short.class, new FieldTypeDefinition("SMALLINT", false));
        fieldTypeMapping.put(Byte.class, new FieldTypeDefinition("TINYINT", false));
        fieldTypeMapping.put(java.math.BigInteger.class, new FieldTypeDefinition("BIGINT", false));
        fieldTypeMapping.put(java.math.BigDecimal.class, new FieldTypeDefinition("DECIMAL",38));
        fieldTypeMapping.put(Number.class, new FieldTypeDefinition("DECIMAL",38));

        fieldTypeMapping.put(String.class, new FieldTypeDefinition("VARCHAR", 255));
        fieldTypeMapping.put(Character.class, new FieldTypeDefinition("CHAR", 1));

        fieldTypeMapping.put(Byte[].class, new FieldTypeDefinition("BLOB", 64000));
        fieldTypeMapping.put(Character[].class, new FieldTypeDefinition("TEXT", 64000));
        fieldTypeMapping.put(byte[].class, new FieldTypeDefinition("BLOB", 64000));
        fieldTypeMapping.put(char[].class, new FieldTypeDefinition("TEXT", 64000));
        fieldTypeMapping.put(java.sql.Blob.class, new FieldTypeDefinition("BLOB", 64000));
        fieldTypeMapping.put(java.sql.Clob.class, new FieldTypeDefinition("TEXT", 64000));
        
        fieldTypeMapping.put(java.sql.Date.class, new FieldTypeDefinition("DATE", false));
        fieldTypeMapping.put(java.sql.Time.class, new FieldTypeDefinition("TIME", false));
        fieldTypeMapping.put(java.sql.Timestamp.class, new FieldTypeDefinition("DATETIME", false));

        return fieldTypeMapping;
    }

    /**
     * INTERNAL:
     * Build the identity query for native sequencing.
     */
    public ValueReadQuery buildSelectQueryForIdentity() {
        ValueReadQuery selectQuery = new ValueReadQuery();
        StringWriter writer = new StringWriter();
        writer.write("SELECT LAST_INSERT_ID()");
        selectQuery.setSQLString(writer.toString());
        return selectQuery;
    }

    /**
     * Return the proc syntax for this platform.
     */
    @Override
    public String buildProcedureCallString(StoredProcedureCall call, AbstractSession session) {
        return "{ " + super.buildProcedureCallString(call, session);
    }
    
    /**
     * INTERNAL:
     * Used for constraint deletion.
     */
    public String getConstraintDeletionString() {
        return " DROP FOREIGN KEY ";
    }

    /**
     * Used for stored function calls.
     */
    @Override
    public String getFunctionCallHeader() {
        return "? " + getAssignmentString() + getProcedureCallHeader();
            // different order -  CALL clause ^^^ comes AFTER assignment operator
    }

    /**
     * Used for sp calls.
     */
    @Override
    public String getProcedureCallTail() {
        return " }"; // case-sensitive
    }
    
    /**
     * INTERNAL:
     * Used for pessimistic locking.
     */
    public String getSelectForUpdateString() {
        return " FOR UPDATE";
    }
    
    /**
     * INTERNAL:
     * This method returns the query to select the timestamp
     * from the server for MySQL.
     */
    public ValueReadQuery getTimestampQuery() {
        if (timestampQuery == null) {
            timestampQuery = new ValueReadQuery();
            timestampQuery.setSQLString("SELECT NOW()");
        }
        return timestampQuery;
    }

    /**
     * Answers whether platform is MySQL.
     */
    public boolean isMySQL() {
        return true;
    }

    /**
     * Initialize any platform-specific operators.
     */
    protected void initializePlatformOperators() {
        super.initializePlatformOperators();
        addOperator(logOperator());
        addOperator(ExpressionOperator.simpleTwoArgumentFunction(ExpressionOperator.Atan2, "ATAN2"));
        addOperator(ExpressionOperator.simpleTwoArgumentFunction(ExpressionOperator.Concat, "CONCAT"));
        addOperator(toNumberOperator());
        addOperator(toCharOperator());
        addOperator(toDateOperator());
        addOperator(dateToStringOperator());
        addOperator(ExpressionOperator.simpleTwoArgumentFunction(ExpressionOperator.Nvl, "IFNULL"));
        addOperator(ExpressionOperator.simpleTwoArgumentFunction(ExpressionOperator.Trunc, "TRUNCATE"));
        addOperator(leftTrim2());
        addOperator(rightTrim2());
    }

    /**
     * INTERNAL:
     * Create the 10 based log operator for this platform.
     */
    protected ExpressionOperator logOperator() {
        ExpressionOperator result = new ExpressionOperator();
        result.setSelector(ExpressionOperator.Log);
        Vector v = org.eclipse.persistence.internal.helper.NonSynchronizedVector.newInstance(2);
        v.addElement("LOG(10, ");
        v.addElement(")");
        result.printsAs(v);
{'fraction_non_alphanumeric': 0.1270181219110379, 'fraction_numerical': 0.008237232289950576, 'mean_word_length': 3.074960841351533, 'pattern_counts': {'":': 0, '<': 33, '<?xml version=': 0, '>': 33, 'https://': 0, 'lorem ipsum': 0, 'www.': 4, 'xml': 0}, 'pii_count': 0, 'substrings_counts': 0, 'word_list_counts': {'cursed_substrings.json': 0, 'profanity_word_list.json': 0, 'sexual_word_list.json': 0, 'zh_pornsignals.json': 0}}
{'dir': 'git-commits-cleaned', 'id': '836356', 'n_tokens_mistral': 4932, 'n_tokens_neox': 4705, 'n_words': 1122}