265 lines
8.1 KiB
Java
265 lines
8.1 KiB
Java
package org.hibernate.dialect;
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import java.sql.SQLException;
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import java.sql.Types;
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import org.hibernate.dialect.function.*;
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import org.hibernate.exception.*;
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import org.hibernate.exception.spi.SQLExceptionConverter;
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import org.hibernate.exception.spi.TemplatedViolatedConstraintNameExtracter;
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import org.hibernate.exception.spi.ViolatedConstraintNameExtracter;
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import org.hibernate.internal.util.JdbcExceptionHelper;
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import org.hibernate.type.StandardBasicTypes;
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public class SQLiteDialect extends Dialect {
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public SQLiteDialect() {
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registerColumnType(Types.BIT, "boolean");
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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($p, $s)");
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registerColumnType(Types.DECIMAL, "decimal");
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registerColumnType(Types.CHAR, "char");
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registerColumnType(Types.VARCHAR, "varchar($l)");
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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, "datetime");
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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.BLOB, "blob");
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registerColumnType(Types.CLOB, "clob");
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registerColumnType(Types.BOOLEAN, "boolean");
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registerFunction("concat", new VarArgsSQLFunction(StandardBasicTypes.STRING, "", "||", ""));
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registerFunction("mod", new SQLFunctionTemplate(StandardBasicTypes.INTEGER, "?1 % ?2"));
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registerFunction("quote", new StandardSQLFunction("quote", StandardBasicTypes.STRING));
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registerFunction("random", new NoArgSQLFunction("random", StandardBasicTypes.INTEGER));
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registerFunction("round", new StandardSQLFunction("round"));
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registerFunction("substr", new StandardSQLFunction("substr", StandardBasicTypes.STRING));
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registerFunction("trim", new AbstractAnsiTrimEmulationFunction() {
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@Override
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protected SQLFunction resolveBothSpaceTrimFunction() {
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return new SQLFunctionTemplate(StandardBasicTypes.STRING, "trim(?1)");
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}
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@Override
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protected SQLFunction resolveBothSpaceTrimFromFunction() {
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return new SQLFunctionTemplate(StandardBasicTypes.STRING, "trim(?2)");
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}
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@Override
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protected SQLFunction resolveLeadingSpaceTrimFunction() {
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return new SQLFunctionTemplate(StandardBasicTypes.STRING, "ltrim(?1)");
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}
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@Override
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protected SQLFunction resolveTrailingSpaceTrimFunction() {
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return new SQLFunctionTemplate(StandardBasicTypes.STRING, "rtrim(?1)");
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}
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@Override
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protected SQLFunction resolveBothTrimFunction() {
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return new SQLFunctionTemplate(StandardBasicTypes.STRING, "trim(?1, ?2)");
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}
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@Override
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protected SQLFunction resolveLeadingTrimFunction() {
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return new SQLFunctionTemplate(StandardBasicTypes.STRING, "ltrim(?1, ?2)");
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}
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@Override
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protected SQLFunction resolveTrailingTrimFunction() {
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return new SQLFunctionTemplate(StandardBasicTypes.STRING, "rtrim(?1, ?2)");
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}
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});
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}
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@Override
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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() { return true; // As specified in NHibernate dialect }
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*/
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@Override
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public boolean hasDataTypeInIdentityColumn() {
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return false; // As specified in NHibernate dialect
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}
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/*
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* public String appendIdentitySelectToInsert(String insertString) { return new StringBuffer(insertString.length()+30). // As specified
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* in NHibernate dialect append(insertString). append("; ").append(getIdentitySelectString()). toString(); }
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*/
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@Override
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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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@Override
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public String getIdentitySelectString() {
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return "select last_insert_rowid()";
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}
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@Override
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public boolean supportsLimit() {
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return true;
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}
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@Override
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public boolean bindLimitParametersInReverseOrder() {
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return true;
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}
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@Override
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protected String getLimitString(final String query, final boolean hasOffset) {
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return query + (hasOffset ? " limit ? offset ?" : " limit ?");
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}
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@Override
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public boolean supportsTemporaryTables() {
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return true;
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}
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@Override
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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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@Override
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public Boolean performTemporaryTableDDLInIsolation() {
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return Boolean.FALSE;
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}
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/*
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* @Override public boolean dropTemporaryTableAfterUse() { return true; // temporary tables are only dropped when the connection is
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* closed. If the connection is pooled... }
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*/
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@Override
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public boolean supportsCurrentTimestampSelection() {
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return true;
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}
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@Override
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public boolean isCurrentTimestampSelectStringCallable() {
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return false;
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}
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@Override
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public String getCurrentTimestampSelectString() {
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return "select current_timestamp";
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}
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private static final int SQLITE_BUSY = 5;
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private static final int SQLITE_LOCKED = 6;
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private static final int SQLITE_IOERR = 10;
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private static final int SQLITE_CORRUPT = 11;
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private static final int SQLITE_NOTFOUND = 12;
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private static final int SQLITE_FULL = 13;
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private static final int SQLITE_CANTOPEN = 14;
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private static final int SQLITE_PROTOCOL = 15;
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private static final int SQLITE_TOOBIG = 18;
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private static final int SQLITE_CONSTRAINT = 19;
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private static final int SQLITE_MISMATCH = 20;
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private static final int SQLITE_NOTADB = 26;
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@Override
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public SQLExceptionConverter buildSQLExceptionConverter() {
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return (SQLExceptionConverter) (sqlException, message, sql) -> {
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final int errorCode = JdbcExceptionHelper.extractErrorCode(sqlException);
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if (errorCode == SQLITE_CONSTRAINT) {
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final String constraintName = EXTRACTER.extractConstraintName(sqlException);
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return new ConstraintViolationException(message, sqlException, sql, constraintName);
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} else if ((errorCode == SQLITE_TOOBIG) || (errorCode == SQLITE_MISMATCH)) return new DataException(message, sqlException, sql);
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else if ((errorCode == SQLITE_BUSY) || (errorCode == SQLITE_LOCKED)) return new LockAcquisitionException(message, sqlException, sql);
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else if (((errorCode >= SQLITE_IOERR) && (errorCode <= SQLITE_PROTOCOL)) || (errorCode == SQLITE_NOTADB))
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return new JDBCConnectionException(message, sqlException, sql);
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return new GenericJDBCException(message, sqlException, sql);
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};
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}
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public static final ViolatedConstraintNameExtracter EXTRACTER = new TemplatedViolatedConstraintNameExtracter() {
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@Override
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public String extractConstraintName(final SQLException sqle) {
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return extractUsingTemplate("constraint ", " failed", sqle.getMessage());
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}
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};
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@Override
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public boolean supportsUnionAll() {
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return true;
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}
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@Override
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public boolean hasAlterTable() {
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return false; // As specified in NHibernate dialect
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}
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@Override
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public boolean dropConstraints() {
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return false;
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}
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@Override
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public String getAddColumnString() {
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return "add column";
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}
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@Override
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public String getForUpdateString() {
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return "";
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}
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@Override
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public boolean supportsOuterJoinForUpdate() {
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return false;
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}
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@Override
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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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@Override
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public String getAddForeignKeyConstraintString(final String constraintName,
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final String[] foreignKey,
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final String referencedTable,
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final String[] primaryKey,
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final 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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@Override
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public String getAddPrimaryKeyConstraintString(final 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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@Override
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public boolean supportsIfExistsBeforeTableName() {
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return true;
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}
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@Override
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public boolean supportsTupleDistinctCounts() {
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return false;
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}
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@Override
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public String getSelectGUIDString() {
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return "select hex(randomblob(16))";
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}
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}
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