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DBTools ORM Class Generator.
/*
* SchemaRenderer.java
*
* Created on February 23, 2002
*
* Copyright 2006 Jeff Campbell. All rights reserved. Unauthorized reproduction
* is a violation of applicable law. This material contains certain
* confidential or proprietary information and trade secrets of Jeff Campbell.
*/
package org.dbtools.renderer;
import org.dbtools.schema.ForeignKey;
import org.dbtools.schema.schemafile.*;
import java.util.ArrayList;
import java.util.Date;
import java.util.List;
/**
* @author Jeff Campbell
*/
public class MySQLRenderer extends SchemaRenderer {
public static final String RENDERER_NAME = "mysql";
public MySQLRenderer() {
super();
this.setDbVendorName(RENDERER_NAME);
}
@Override
public String generateSchema(SchemaDatabase database, String[] tablesToGenerate, String[] viewsToGenerate, boolean dropTables, boolean createInserts) {
showProgress("Generating SQL schema using MySQL renderer ...", true);
StringBuilder schema = new StringBuilder();
List foreignKeysToCreate = new ArrayList<>();
List requestedTables = getTablesToGenerate(database, tablesToGenerate);
List requestedViews = getViewsToGenerate(database, viewsToGenerate);
// drop schema
if (dropTables) {
generateDropSchema(true, false, schema, requestedTables, requestedViews);
}
// create tables
for (SchemaTable table : requestedTables) {
// add table header
// reset values for new table
SchemaTableField primaryKey = null;
List indexFields = new ArrayList<>();
schema.append("CREATE TABLE ");
schema.append(table.getName());
schema.append(" (\n");
// add fields
List fields = table.getFields();
SchemaTableField enumPKField = null;
SchemaTableField enumValueField = null;
int incrementFieldInitialValue = 1;
for (int j = 0; j < fields.size(); j++) {
SchemaTableField field = fields.get(j);
if (field.isPrimaryKey()) {
primaryKey = field; // add field
// name
}
schema.append("\t");
schema.append(field.getName());
// datatype
schema.append(" ");
schema.append(getSqlType(field.getJdbcDataType()));
//check for size for datatype
if (field.getSize() > 0) {
int digits = field.getSize() + field.getDecimals();
schema.append("(");
schema.append(digits);
// check for decimals
if (field.getDecimals() > 0) {
schema.append(", ").append(field.getDecimals());
}
schema.append(")");
}
// not null
if (field.isNotNull()) {
schema.append(" NOT NULL");
}
if (field.isIncrement()) {
incrementFieldInitialValue = field.getIncrementInitialValue();
if (!table.isEnumerationTable()) {
schema.append(" AUTO_INCREMENT");
}
}
String defaultValue = field.getDefaultValue();
if (defaultValue != null && !defaultValue.equals("")) {
// check the formatted value... if it is a Date... then 'now' default is NOT allowed
String defaultValueFormatted = formatDefaultValue(field);
if (defaultValueFormatted.length() > 0) {
schema.append(" DEFAULT ").append(defaultValueFormatted);
}
}
if (field.isUnique()) {
schema.append(" UNIQUE");
}
if (field.isIndex()) {
indexFields.add(field);
}
// add foreign key
if (!field.getForeignKeyField().equals("")) {
foreignKeysToCreate.add(new ForeignKey(table.getName(), field.getName(), field.getForeignKeyTable(), field.getForeignKeyField()));
}
schema.append("");
// if this is the last one, then don't put a ','
if (j == fields.size() - 1) {
// add the primary key
if (primaryKey != null) {
schema.append(",\n");
schema.append("\tPRIMARY KEY(");
schema.append(primaryKey.getName());
schema.append(")");
} else {
//schema.append("\n");
}
// add index fields
for (SchemaTableField indexField : indexFields) {
schema.append(",\n\tINDEX ").append(indexField.getName()).append("_IDX (").append(indexField.getName()).append(")");
}
// add forengn keys fields
//if (foreignKeyFields.size() > 0) {
// for (int k = 0; k < foreignKeyFields.size(); k++) {
// SchemaField foreignKeyField = (SchemaField) foreignKeyFields.get(k);
// schema.append(",\n\tFOREIGN KEY (");
//
// schema.append(foreignKeyField.getName()).append(") REFERENCES ").append(foreignKeyField.getForeignKeyTable()).append(" (").append(foreignKeyField.getForeignKeyField()).append(")");
// }
//}
} else {
schema.append(",\n");
}
// check for enumFields
if (enumPKField == null && field.isPrimaryKey()) {
enumPKField = field;
}
if (enumValueField == null && field.getJdbcDataType() == SchemaFieldType.VARCHAR) {
enumValueField = field;
}
}
// check for uniqueDeclarations
generateUniqueConstraints(schema, table);
String tableType = table.getParameter("tableType");
// add table footer
// add table type if needed
if (tableType != null && !tableType.equals("")) {
schema.append("\n) TYPE=");
schema.append(tableType);
schema.append(";\n\n");
} else {
schema.append("\n);\n\n");
}
// check for default auto-encrement
if (!table.isEnumerationTable() && incrementFieldInitialValue > 1) {
schema.append("\nALTER TABLE ").append(table.getName()).append(" AUTO_INCREMENT = ").append(incrementFieldInitialValue).append(";\n\n");
}
generateEnumSchema(schema, table, getAlreadyCreatedEnum(), enumPKField, enumValueField, createInserts);
}
// create foreign keys
for (ForeignKey fk : foreignKeysToCreate) {
schema.append("ALTER TABLE ").append(fk.getPrimaryKeyTable()).append("\n");
schema.append("ADD CONSTRAINT ").append(fk.getPrimaryKeyTable()).append("_").append(fk.getPrimaryKeyField()).append("_FK\n");
schema.append("FOREIGN KEY (").append(fk.getPrimaryKeyField()).append(")\n");
schema.append("REFERENCES ").append(fk.getForeignKeyTable()).append(" (").append(fk.getForeignKeyField()).append(");\n");
schema.append("\n");
}
return schema.toString();
}
@Override
public String formatDefaultValue(SchemaTableField field) {
String defaultValue = field.getDefaultValue();
String newDefaultValue = "";
Class javaType = field.getJavaClassType();
if (javaType == Date.class) {
if (defaultValue.equalsIgnoreCase("now")) {
newDefaultValue = ""; // now is NOT supported by MySQL
System.out.println("WARNING: MySQL does NOT support now or now() as a default for date fields... skipping DEFAULT");
}
} else {
newDefaultValue = super.formatDefaultValue(field);
}
return newDefaultValue;
}
}