org.teiid.query.sql.lang.StoredProcedure Maven / Gradle / Ivy
/*
* Copyright Red Hat, Inc. and/or its affiliates
* and other contributors as indicated by the @author tags and
* the COPYRIGHT.txt file distributed with this work.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.teiid.query.sql.lang;
import java.util.ArrayList;
import java.util.Collection;
import java.util.Collections;
import java.util.Iterator;
import java.util.LinkedHashMap;
import java.util.List;
import java.util.Map;
import java.util.TreeMap;
import org.teiid.client.metadata.ParameterInfo;
import org.teiid.query.QueryPlugin;
import org.teiid.query.sql.LanguageVisitor;
import org.teiid.query.sql.symbol.ElementSymbol;
import org.teiid.query.sql.symbol.Expression;
import org.teiid.query.sql.symbol.GroupSymbol;
import org.teiid.query.sql.visitor.SQLStringVisitor;
/**
* Represents a StoredProcedure statement of the form:
*/
public class StoredProcedure extends ProcedureContainer {
// =========================================================================
// C O N S T R U C T O R S
// =========================================================================
/** Used as parameters */
private Map mapOfParameters = new TreeMap();
/** Used to reference result set parameter if there is any */
private Integer resultSetParameterKey;
private String procedureName;
private Object procedureID;
private Object modelID;
private String callableName;
//stored procedure is treated as a group
private GroupSymbol group;
//whether parameters should be displayed in traditional indexed
//manor, or as named parameters
private boolean displayNamedParameters;
private boolean calledWithReturn;
private boolean isCallableStatement;
private boolean isProcedureRelational;
private boolean pushedInQuery;
/**
* Constructs a default instance of this class.
*/
public StoredProcedure() {
}
/**
* Return type of command.
* @return TYPE_STORED_PROCEDURE
*/
public int getType() {
return Command.TYPE_STORED_PROCEDURE;
}
private SPParameter getResultSetParameter(){
if (this.resultSetParameterKey != null){
return mapOfParameters.get(resultSetParameterKey);
}
return null;
}
// =========================================================================
// M E T H O D S
// =========================================================================
/**
* Set this stored procedure's name
*
* @param procedureName the stored procedure's name
* @throws IllegalArgumentExcecption if the procedureName is invalid.
*/
public void setProcedureName(String procedureName){
this.procedureName = procedureName;
}
/**
* Get this stored procedure's name
*
* @return procedureName the stored procedure's name
*/
public String getProcedureName(){
return this.procedureName;
}
public String getProcedureCallableName(){
return this.callableName != null?this.callableName:this.procedureName;
}
public void setProcedureCallableName(String callableName){
this.callableName = callableName;
}
public Object getModelID(){
return modelID;
}
public void setModelID(Object modelID){
this.modelID = modelID;
}
public void setProcedureID(Object procedureID){
this.procedureID = procedureID;
}
public Object getProcedureID(){
return this.procedureID;
}
/**
* Set a stored procedure's parameter
*
* @param index the index of the parameter to set
* @param parameter StoredProcedureParameter the parameter
* @throws IllegalArgumentExcecption if the parameters (index and parameter)
* are invalid.
*/
public void setParameter(SPParameter parameter){
if(parameter == null){
throw new IllegalArgumentException(QueryPlugin.Util.getString("ERR.015.010.0011")); //$NON-NLS-1$
}
Integer key = parameter.getIndex();
if(parameter.getParameterType() == ParameterInfo.RESULT_SET){
resultSetParameterKey = key;
}
mapOfParameters.put(key, parameter);
}
/**
* Returns a List of SPParameter objects for this stored procedure
*
*/
public Collection getParameters(){
return mapOfParameters.values();
}
public Map getMapOfParameters() {
return mapOfParameters;
}
public SPParameter getParameter(int index){
return mapOfParameters.get(index);
}
public int getNumberOfColumns(){
SPParameter resultSetParameter = getResultSetParameter();
if(resultSetParameter != null){
return resultSetParameter.getResultSetColumns().size();
}
return 0;
}
public ElementSymbol getResultSetColumn(int index){
SPParameter resultSetParameter = getResultSetParameter();
if(resultSetParameter != null){
return resultSetParameter.getResultSetColumn(index);
}
return null;
}
public List getResultSetColumns(){
SPParameter resultSetParameter = getResultSetParameter();
if(resultSetParameter != null){
List result = new ArrayList(resultSetParameter.getResultSetColumns().size());
for (Iterator i = resultSetParameter.getResultSetColumns().iterator(); i.hasNext();) {
ElementSymbol symbol = i.next().clone();
symbol.setGroupSymbol(getGroup());
result.add(symbol);
}
return result;
}
return Collections.emptyList();
}
public void acceptVisitor(LanguageVisitor visitor) {
visitor.visit(this);
}
public Object clone() {
StoredProcedure copy = new StoredProcedure();
copy.setModelID(getModelID());
copy.setProcedureName(getProcedureName());
copy.setProcedureCallableName(getProcedureCallableName());
copy.setProcedureID(getProcedureID());
copy.setGroup(getGroup().clone());
copy.callableName = callableName;
copy.calledWithReturn = calledWithReturn;
Collection params = getParameters();
for (SPParameter spParameter : params) {
copy.setParameter((SPParameter)spParameter.clone());
}
copy.resultSetParameterKey = resultSetParameterKey;
this.copyMetadataState(copy);
copy.displayNamedParameters = displayNamedParameters;
copy.isCallableStatement = isCallableStatement;
copy.isProcedureRelational = isProcedureRelational;
copy.pushedInQuery = pushedInQuery;
return copy;
}
public boolean returnsResultSet(){
SPParameter param = getResultSetParameter();
return param != null && !param.getResultSetColumns().isEmpty();
}
public boolean returnsScalarValue(){
for (SPParameter param : this.mapOfParameters.values()) {
if (param.getParameterType() == SPParameter.RETURN_VALUE) {
return true;
}
}
return false;
}
public boolean returnParameters() {
return isCallableStatement || !returnsResultSet();
}
/**
* Get the ordered list of all elements returned by this query. These elements
* may be ElementSymbols or ExpressionSymbols but in all cases each represents a
* single column.
* @return Ordered list of ElementSymbol
*/
public List getProjectedSymbols(){
if (!returnParameters()) {
return getResultSetColumns();
}
//add result set columns
List result = new ArrayList(getResultSetColumns());
int size = result.size();
//add out/inout parameter symbols
for (SPParameter parameter : mapOfParameters.values()) {
if(parameter.getParameterType() == ParameterInfo.RETURN_VALUE){
ElementSymbol symbol = parameter.getParameterSymbol();
symbol.setGroupSymbol(this.getGroup());
//should be first among parameters, which we'll ensure
result.add(size, symbol);
} else if(parameter.getParameterType() == ParameterInfo.INOUT || parameter.getParameterType() == ParameterInfo.OUT){
ElementSymbol symbol = parameter.getParameterSymbol();
symbol.setGroupSymbol(this.getGroup());
result.add(symbol);
}
}
return result;
}
/**
* Returns a string representation of an instance of this class.
* @return String representation of object
*/
public String toString() {
return SQLStringVisitor.getSQLString(this);
}
/**
* @see java.lang.Object#hashCode()
*/
@Override
public int hashCode() {
return this.getGroup().hashCode();
}
public boolean equals(Object obj) {
// Quick same object test
if(this == obj) {
return true;
}
// Quick fail tests
if(!(obj instanceof StoredProcedure)) {
return false;
}
StoredProcedure other = (StoredProcedure)obj;
return sameOptionAndHint(other) &&
this.getGroup().equals(other.getGroup()) &&
this.mapOfParameters.equals(other.mapOfParameters) &&
this.pushedInQuery == other.pushedInQuery;
}
public void clearParameters(){
this.mapOfParameters.clear();
}
public void setGroup(GroupSymbol group){
this.group = group;
}
public GroupSymbol getGroup() {
if(group == null) {
return new GroupSymbol(this.getProcedureCallableName());
}
return group;
}
/**
* @see org.teiid.query.sql.lang.Command#areResultsCachable()
*/
public boolean areResultsCachable() {
if (getUpdateCount() > 0) {
return false;
}
return Query.areColumnsCachable(getProjectedSymbols());
}
/**
* Indicates whether parameters should be displayed in traditional
* indexed manor, or as named parameters
* @return Returns whether to display parameters as named or not
* @since 4.3
*/
public boolean displayNamedParameters() {
return this.displayNamedParameters;
}
/**
* Indicate whether parameters should be displayed in traditional
* indexed manor, or as named parameters
* @param namedParameters whether to display parameters as named or not
* @since 4.3
*/
public void setDisplayNamedParameters(boolean displayNamedParameters) {
this.displayNamedParameters = displayNamedParameters;
}
public List getInputParameters() {
List parameters = new ArrayList(getParameters());
Iterator params = parameters.iterator();
while (params.hasNext()) {
SPParameter param = params.next();
if(param.getParameterType() != ParameterInfo.IN && param.getParameterType() != ParameterInfo.INOUT) {
params.remove();
}
}
return parameters;
}
public boolean isProcedureRelational() {
return isProcedureRelational;
}
public void setProcedureRelational(boolean isProcedureRelational) {
this.isProcedureRelational = isProcedureRelational;
}
public boolean isCallableStatement() {
return isCallableStatement;
}
public void setCallableStatement(boolean isCallableStatement) {
this.isCallableStatement = isCallableStatement;
}
public LinkedHashMap getProcedureParameters() {
LinkedHashMap map = new LinkedHashMap();
for (SPParameter element : this.getInputParameters()) {
map.put(element.getParameterSymbol(), element.getExpression());
} // for
return map;
}
public void setCalledWithReturn(boolean calledWithReturn) {
this.calledWithReturn = calledWithReturn;
}
public boolean isCalledWithReturn() {
return calledWithReturn;
}
public boolean isPushedInQuery() {
return pushedInQuery;
}
public void setPushedInQuery(boolean pushedInQuery) {
this.pushedInQuery = pushedInQuery;
}
}