/**
* Auto-parameterize all of the literals in the parsed SQL statement.
*
* @return An opaque token representing the parsed statement with (possibly) parameterization.
*/
public String parameterize() {
m_paramzInfo = ParameterizationInfo.parameterize(m_xmlSQL);
Set<Integer> paramIds = new HashSet<Integer>();
ParameterizationInfo.findUserParametersRecursively(m_xmlSQL, paramIds);
m_adhocUserParamsCount = paramIds.size();
// skip plans with pre-existing parameters and plans that don't parameterize
// assume a user knows how to cache/optimize these
if (m_paramzInfo != null) {
// if requested output the second version of the parsed plan
m_planSelector.outputParameterizedCompiledStatement(m_paramzInfo.parameterizedXmlSQL);
return m_paramzInfo.parameterizedXmlSQL.toMinString();
}
// fallback when parameterization is
return m_xmlSQL.toMinString();
}
public boolean extractParamValues(ParameterizationInfo paramzInfo) throws Exception {
VoltType[] paramTypes = parameterTypes();
if (paramTypes.length > MAX_PARAM_COUNT) {
return false;
}
if (paramzInfo.paramLiteralValues != null) {
m_generatedParameterCount = paramzInfo.paramLiteralValues.length;
}
m_extractedParamValues = paramzInfo.extractedParamValues(paramTypes);
return true;
}
public ParameterSet extractedParamValues(VoltType[] parameterTypes) throws Exception {
if (m_paramzInfo == null) {
return null;
}
return m_paramzInfo.extractedParamValues(parameterTypes);
}
