155 lines
4.9 KiB
Java
155 lines
4.9 KiB
Java
package org.hso.ecommerce.db;
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import java.sql.Types;
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import org.hibernate.dialect.Dialect;
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import org.hibernate.dialect.function.SQLFunctionTemplate;
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import org.hibernate.dialect.function.StandardSQLFunction;
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import org.hibernate.dialect.function.VarArgsSQLFunction;
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import org.hibernate.type.StringType;
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public class SQLiteDialect extends Dialect {
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public SQLiteDialect() {
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registerColumnType(Types.BIT, "integer");
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registerColumnType(Types.TINYINT, "tinyint");
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registerColumnType(Types.SMALLINT, "smallint");
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registerColumnType(Types.INTEGER, "integer");
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registerColumnType(Types.BIGINT, "bigint");
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registerColumnType(Types.FLOAT, "float");
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registerColumnType(Types.REAL, "real");
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registerColumnType(Types.DOUBLE, "double");
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registerColumnType(Types.NUMERIC, "numeric");
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registerColumnType(Types.DECIMAL, "decimal");
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registerColumnType(Types.CHAR, "char");
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registerColumnType(Types.VARCHAR, "varchar");
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registerColumnType(Types.LONGVARCHAR, "longvarchar");
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registerColumnType(Types.DATE, "date");
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registerColumnType(Types.TIME, "time");
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registerColumnType(Types.TIMESTAMP, "timestamp");
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registerColumnType(Types.BINARY, "blob");
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registerColumnType(Types.VARBINARY, "blob");
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registerColumnType(Types.LONGVARBINARY, "blob");
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// registerColumnType(Types.NULL, "null");
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registerColumnType(Types.BLOB, "blob");
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registerColumnType(Types.CLOB, "clob");
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registerColumnType(Types.BOOLEAN, "integer");
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registerFunction("concat", new VarArgsSQLFunction(StringType.INSTANCE, "", "||", ""));
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registerFunction("mod", new SQLFunctionTemplate(StringType.INSTANCE, "?1 % ?2"));
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registerFunction("substr", new StandardSQLFunction("substr", StringType.INSTANCE));
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registerFunction("substring", new StandardSQLFunction("substr", StringType.INSTANCE));
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}
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public boolean supportsIdentityColumns() {
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return true;
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}
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/*
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public boolean supportsInsertSelectIdentity() {
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return true; // As specify in NHibernate dialect
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}
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*/
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public boolean hasDataTypeInIdentityColumn() {
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return false; // As specify in NHibernate dialect
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}
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/*
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public String appendIdentitySelectToInsert(String insertString) {
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return new StringBuffer(insertString.length()+30). // As specify in NHibernate dialect
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append(insertString).
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append("; ").append(getIdentitySelectString()).
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toString();
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}
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*/
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public String getIdentityColumnString() {
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// return "integer primary key autoincrement";
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return "integer";
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}
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public String getIdentitySelectString() {
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return "select last_insert_rowid()";
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}
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public boolean supportsLimit() {
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return true;
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}
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protected String getLimitString(String query, boolean hasOffset) {
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return new StringBuffer(query.length() + 20).
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append(query).
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append(hasOffset ? " limit ? offset ?" : " limit ?").
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toString();
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}
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public boolean supportsTemporaryTables() {
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return true;
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}
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public String getCreateTemporaryTableString() {
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return "create temporary table if not exists";
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}
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public boolean dropTemporaryTableAfterUse() {
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return false;
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}
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public boolean supportsCurrentTimestampSelection() {
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return true;
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}
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public boolean isCurrentTimestampSelectStringCallable() {
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return false;
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}
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public String getCurrentTimestampSelectString() {
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return "select current_timestamp";
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}
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public boolean supportsUnionAll() {
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return true;
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}
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public boolean hasAlterTable() {
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return false; // As specify in NHibernate dialect
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}
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public boolean dropConstraints() {
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return false;
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}
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public String getAddColumnString() {
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return "add column";
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}
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public String getForUpdateString() {
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return "";
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}
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public boolean supportsOuterJoinForUpdate() {
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return false;
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}
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public String getDropForeignKeyString() {
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throw new UnsupportedOperationException("No drop foreign key syntax supported by SQLiteDialect");
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}
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public String getAddForeignKeyConstraintString(String constraintName,
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String[] foreignKey, String referencedTable, String[] primaryKey,
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boolean referencesPrimaryKey) {
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throw new UnsupportedOperationException("No add foreign key syntax supported by SQLiteDialect");
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}
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public String getAddPrimaryKeyConstraintString(String constraintName) {
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throw new UnsupportedOperationException("No add primary key syntax supported by SQLiteDialect");
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}
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public boolean supportsIfExistsBeforeTableName() {
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return true;
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}
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public boolean supportsCascadeDelete() {
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return false;
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}
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}
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