java.sql.ParameterMetaData#getScale ( )源码实例Demo

/**
 * @param meta Param metadata.
 * @param order Param order.
 * @throws SQLException On errror.
 */
public JdbcParameterMeta(ParameterMetaData meta, int order) throws SQLException {
    isNullable = meta.isNullable(order);
    signed = meta.isSigned(order);
    precision = meta.getPrecision(order);
    scale = meta.getScale(order);
    type = meta.getParameterType(order);
    typeName = meta.getParameterTypeName(order);
    typeClass = meta.getParameterClassName(order);
    mode = meta.getParameterMode(order);
}
 

private void setupCallableStatementParams(CallableStatement cs) throws SQLException
{
	ParameterMetaData pmeta = getParameterMetaData();
	int numElems = pmeta.getParameterCount();

	for ( int i = 0; i < numElems; i ++)
	{
		boolean outputFlag = false;
		
		int parameterMode = pmeta.getParameterMode(i + 1);
		int parameterType = pmeta.getParameterType(i + 1);
                       int parameterPrecision = pmeta.getPrecision(i + 1);
                       int parameterScale = pmeta.getScale(i + 1);

		switch (parameterMode) {
			case JDBC30Translation.PARAMETER_MODE_IN:
				break;
			case JDBC30Translation.PARAMETER_MODE_OUT:
			case JDBC30Translation.PARAMETER_MODE_IN_OUT:
				outputFlag = true;
				break;
			case JDBC30Translation.PARAMETER_MODE_UNKNOWN:
				// It's only unknown if array
				String objectType = pmeta.getParameterClassName(i+1);
				parameterType =
					getOutputParameterTypeFromClassName(objectType);
				if (parameterType  != NOT_OUTPUT_PARAM)
					outputFlag = true;
		}

		if (outputFlag)
		{
			if (outputTypes == null) //not initialized yet, since previously none output
			{
				outputTypes = new int[numElems];
				outputPrecision = new int [numElems];
				outputScale = new int [numElems];
				for (int j = 0; j < numElems; j++) {
					outputTypes[j] = NOT_OUTPUT_PARAM;  //default init value
					outputPrecision[j] = NOT_OUTPUT_PARAM;
					outputScale[j] = NOT_OUTPUT_PARAM;
				}
			}
			// save the output type so we can register when we parse
			// the SQLDTA
			outputTypes[i] = parameterType;
			outputPrecision[i] = parameterPrecision;
			outputScale[i] = parameterScale;                
		}
		
	}
}
 

@Test(expected = SQLFeatureNotSupportedException.class)
public void assertGetScale() throws SQLException {
    for (ParameterMetaData each : parameterMetaData) {
        each.getScale(1);
    }
}
 

private void setupCallableStatementParams(CallableStatement cs) throws SQLException
{
	ParameterMetaData pmeta = getParameterMetaData();
	int numElems = pmeta.getParameterCount();

	for ( int i = 0; i < numElems; i ++)
	{
		boolean outputFlag = false;
		
		int parameterMode = pmeta.getParameterMode(i + 1);
		int parameterType = pmeta.getParameterType(i + 1);
                       int parameterPrecision = pmeta.getPrecision(i + 1);
                       int parameterScale = pmeta.getScale(i + 1);

		switch (parameterMode) {
			case JDBC30Translation.PARAMETER_MODE_IN:
				break;
			case JDBC30Translation.PARAMETER_MODE_OUT:
			case JDBC30Translation.PARAMETER_MODE_IN_OUT:
				outputFlag = true;
				break;
			case JDBC30Translation.PARAMETER_MODE_UNKNOWN:
				// It's only unknown if array
				String objectType = pmeta.getParameterClassName(i+1);
				parameterType =
					getOutputParameterTypeFromClassName(objectType);
				if (parameterType  != NOT_OUTPUT_PARAM)
					outputFlag = true;
		}

		if (outputFlag)
		{
			if (outputTypes == null) //not initialized yet, since previously none output
			{
				outputTypes = new int[numElems];
				outputPrecision = new int [numElems];
				outputScale = new int [numElems];
				for (int j = 0; j < numElems; j++) {
					outputTypes[j] = NOT_OUTPUT_PARAM;  //default init value
					outputPrecision[j] = NOT_OUTPUT_PARAM;
					outputScale[j] = NOT_OUTPUT_PARAM;
				}
			}
			// save the output type so we can register when we parse
			// the SQLDTA
			outputTypes[i] = parameterType;
			outputPrecision[i] = parameterPrecision;
			outputScale[i] = parameterScale;                
		}
		
	}
}
 

private void setupCallableStatementParams(CallableStatement cs) throws SQLException
{
	ParameterMetaData pmeta = getParameterMetaData();
	int numElems = pmeta.getParameterCount();

	for ( int i = 0; i < numElems; i ++)
	{
		boolean outputFlag = false;
		
		int parameterMode = pmeta.getParameterMode(i + 1);
		int parameterType = pmeta.getParameterType(i + 1);
                       int parameterPrecision = pmeta.getPrecision(i + 1);
                       int parameterScale = pmeta.getScale(i + 1);

		switch (parameterMode) {
			case JDBC30Translation.PARAMETER_MODE_IN:
				break;
			case JDBC30Translation.PARAMETER_MODE_OUT:
			case JDBC30Translation.PARAMETER_MODE_IN_OUT:
				outputFlag = true;
				break;
			case JDBC30Translation.PARAMETER_MODE_UNKNOWN:
				// It's only unknown if array
				String objectType = pmeta.getParameterClassName(i+1);
				parameterType =
					getOutputParameterTypeFromClassName(objectType);
				if (parameterType  != NOT_OUTPUT_PARAM)
					outputFlag = true;
		}

		if (outputFlag)
		{
			if (outputTypes == null) //not initialized yet, since previously none output
			{
				outputTypes = new int[numElems];
				outputPrecision = new int [numElems];
				outputScale = new int [numElems];
				for (int j = 0; j < numElems; j++) {
					outputTypes[j] = NOT_OUTPUT_PARAM;  //default init value
					outputPrecision[j] = NOT_OUTPUT_PARAM;
					outputScale[j] = NOT_OUTPUT_PARAM;
				}
			}
			// save the output type so we can register when we parse
			// the SQLDTA
			outputTypes[i] = parameterType;
			outputPrecision[i] = parameterPrecision;
			outputScale[i] = parameterScale;                
		}
		
	}
}