/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- * vim: sw=2 ts=2 sts=2 expandtab * This Source Code Form is subject to the terms of the Mozilla Public * License, v. 2.0. If a copy of the MPL was not distributed with this * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ #include "mozIStorageBaseStatement.idl" %{C++ #include "mozilla/DebugOnly.h" %} [ptr] native octetPtr(uint8_t); /** * A SQL statement that can be used for both synchronous and asynchronous * purposes. */ [scriptable, uuid(57ec7be1-36cf-4510-b938-7d1c9ee8cec5)] interface mozIStorageStatement : mozIStorageBaseStatement { /** * Create a clone of this statement, by initializing a new statement * with the same connection and same SQL statement as this one. It * does not preserve statement state; that is, if a statement is * being executed when it is cloned, the new statement will not be * executing. */ mozIStorageStatement clone(); /* * Number of parameters */ readonly attribute unsigned long parameterCount; /** * Name of nth parameter, if given */ AUTF8String getParameterName(in unsigned long aParamIndex); /** * Returns the index of the named parameter. * * @param aName * The name of the parameter you want the index for. This does not * include the leading ':'. * @return the index of the named parameter. */ unsigned long getParameterIndex(in AUTF8String aName); /** * Number of columns returned */ readonly attribute unsigned long columnCount; /** * Name of nth column */ AUTF8String getColumnName(in unsigned long aColumnIndex); /** * Obtains the index of the column with the specified name. * * @param aName * The name of the column. * @return The index of the column with the specified name. */ unsigned long getColumnIndex(in AUTF8String aName); /** * Obtains the declared column type of a prepared statement. * * @param aParamIndex * The zero-based index of the column who's declared type we are * interested in. * @return the declared index type. */ AUTF8String getColumnDecltype(in unsigned long aParamIndex); /** * Reset parameters/statement execution */ void reset(); /** * Execute the query, ignoring any results. This is accomplished by * calling executeStep() once, and then calling reset(). * * Error and last insert info, etc. are available from * the mozStorageConnection. */ void execute(); /** * Execute a query, using any currently-bound parameters. Reset * must be called on the statement after the last call of * executeStep. * * @return a boolean indicating whether there are more rows or not; * row data may be accessed using mozIStorageValueArray methods on * the statement. */ boolean executeStep(); /** * Execute a query, using any currently-bound parameters. Reset is called * when no more data is returned. This method is only available to JavaScript * consumers. * * @deprecated As of Mozilla 1.9.2 in favor of executeStep(). * * @return a boolean indicating whether there are more rows or not. * * [deprecated] boolean step(); */ /** * Obtains the current list of named parameters, which are settable. This * property is only available to JavaScript consumers. * * readonly attribute mozIStorageStatementParams params; */ /** * Obtains the current row, with access to all the data members by name. This * property is only available to JavaScript consumers. * * readonly attribute mozIStorageStatementRow row; */ ////////////////////////////////////////////////////////////////////////////// //// Copied contents of mozIStorageValueArray /** * These type values are returned by getTypeOfIndex * to indicate what type of value is present at * a given column. */ const long VALUE_TYPE_NULL = 0; const long VALUE_TYPE_INTEGER = 1; const long VALUE_TYPE_FLOAT = 2; const long VALUE_TYPE_TEXT = 3; const long VALUE_TYPE_BLOB = 4; /** * The number of entries in the array (each corresponding to a column in the * database row) */ readonly attribute unsigned long numEntries; /** * Indicate the data type of the current result row for the the given column. * SQLite will perform type conversion if you ask for a value as a different * type than it is stored as. * * @param aIndex * 0-based column index. * @return The type of the value at the given column index; one of * VALUE_TYPE_NULL, VALUE_TYPE_INTEGER, VALUE_TYPE_FLOAT, * VALUE_TYPE_TEXT, VALUE_TYPE_BLOB. */ long getTypeOfIndex(in unsigned long aIndex); /** * Retrieve the contents of a column from the current result row as an * integer. * * @param aIndex * 0-based colummn index. * @return Column value interpreted as an integer per type conversion rules. * @{ */ long getInt32(in unsigned long aIndex); long long getInt64(in unsigned long aIndex); /** @} */ /** * Retrieve the contents of a column from the current result row as a * floating point double. * * @param aIndex * 0-based colummn index. * @return Column value interpreted as a double per type conversion rules. */ double getDouble(in unsigned long aIndex); /** * Retrieve the contents of a column from the current result row as a * string. * * @param aIndex * 0-based colummn index. * @return The value for the result column interpreted as a string. If the * stored value was NULL, you will get an empty string with IsVoid set * to distinguish it from an explicitly set empty string. * @{ */ AUTF8String getUTF8String(in unsigned long aIndex); AString getString(in unsigned long aIndex); /** @} */ /** * Retrieve the contents of a column from the current result row as a * blob. * * @param aIndex * 0-based colummn index. * @param[out] aDataSize * The number of bytes in the blob. * @param[out] aData * The contents of the BLOB. This will be NULL if aDataSize == 0. */ void getBlob(in unsigned long aIndex, out unsigned long aDataSize, [array,size_is(aDataSize)] out octet aData); /** * Check whether the given column in the current result row is NULL. * * @param aIndex * 0-based colummn index. * @return true if the value for the result column is null. */ boolean getIsNull(in unsigned long aIndex); /** * Returns a shared string pointer */ [noscript] void getSharedUTF8String(in unsigned long aIndex, out unsigned long aLength, [shared,retval] out string aResult); [noscript] void getSharedString(in unsigned long aIndex, out unsigned long aLength, [shared,retval] out wstring aResult); [noscript] void getSharedBlob(in unsigned long aIndex, out unsigned long aLength, [shared,retval] out octetPtr aResult); %{C++ /** * Getters for native code that return their values as * the return type, for convenience and sanity. * * Not virtual; no vtable bloat. */ inline int32_t AsInt32(uint32_t idx) { int32_t v = 0; mozilla::DebugOnly rv = GetInt32(idx, &v); NS_ABORT_IF_FALSE(NS_SUCCEEDED(rv) || IsNull(idx), "Getting value failed, wrong column index?"); return v; } inline int64_t AsInt64(uint32_t idx) { int64_t v = 0; mozilla::DebugOnly rv = GetInt64(idx, &v); NS_ABORT_IF_FALSE(NS_SUCCEEDED(rv) || IsNull(idx), "Getting value failed, wrong column index?"); return v; } inline double AsDouble(uint32_t idx) { double v = 0.0; mozilla::DebugOnly rv = GetDouble(idx, &v); NS_ABORT_IF_FALSE(NS_SUCCEEDED(rv) || IsNull(idx), "Getting value failed, wrong column index?"); return v; } inline const char* AsSharedUTF8String(uint32_t idx, uint32_t *len) { const char *str = nullptr; *len = 0; mozilla::DebugOnly rv = GetSharedUTF8String(idx, len, &str); NS_ABORT_IF_FALSE(NS_SUCCEEDED(rv) || IsNull(idx), "Getting value failed, wrong column index?"); return str; } inline const PRUnichar* AsSharedWString(uint32_t idx, uint32_t *len) { const PRUnichar *str = nullptr; *len = 0; mozilla::DebugOnly rv = GetSharedString(idx, len, &str); NS_ABORT_IF_FALSE(NS_SUCCEEDED(rv) || IsNull(idx), "Getting value failed, wrong column index?"); return str; } inline const uint8_t* AsSharedBlob(uint32_t idx, uint32_t *len) { const uint8_t *blob = nullptr; *len = 0; mozilla::DebugOnly rv = GetSharedBlob(idx, len, &blob); NS_ABORT_IF_FALSE(NS_SUCCEEDED(rv) || IsNull(idx), "Getting value failed, wrong column index?"); return blob; } inline bool IsNull(uint32_t idx) { bool b = false; mozilla::DebugOnly rv = GetIsNull(idx, &b); NS_ABORT_IF_FALSE(NS_SUCCEEDED(rv), "Getting value failed, wrong column index?"); return b; } %} };