Check for procedure vs function constants in CallMetaDataContext

Closes gh-31550

(cherry picked from commit 9957bb6)

spring-jdbc/src/main/java/org/springframework/jdbc/core/metadata/CallMetaDataContext.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2021 the original author or authors.
+ * Copyright 2002-2023 the original author or authors.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -16,7 +16,6 @@
 
 package org.springframework.jdbc.core.metadata;
 
-import java.sql.DatabaseMetaData;
 import java.util.ArrayList;
 import java.util.HashSet;
 import java.util.LinkedHashMap;
@@ -115,28 +114,28 @@ public String getFunctionReturnName() {
 	}
 
 	/**
-	 * Specify a limited set of in parameters to be used.
+	 * Specify a limited set of the {@code in} parameters to be used.
 	 */
 	public void setLimitedInParameterNames(Set<String> limitedInParameterNames) {
 		this.limitedInParameterNames = limitedInParameterNames;
 	}
 
 	/**
-	 * Get a limited set of in parameters to be used.
+	 * Get the limited set of the {@code in} parameters to be used.
 	 */
 	public Set<String> getLimitedInParameterNames() {
 		return this.limitedInParameterNames;
 	}
 
 	/**
-	 * Specify the names of the out parameters.
+	 * Specify the names of the {@code out} parameters.
 	 */
 	public void setOutParameterNames(List<String> outParameterNames) {
 		this.outParameterNames = outParameterNames;
 	}
 
 	/**
-	 * Get a list of the out parameter names.
+	 * Get the list of the {@code out} parameter names.
 	 */
 	public List<String> getOutParameterNames() {
 		return this.outParameterNames;
@@ -434,14 +433,14 @@ protected List<SqlParameter> reconcileParameters(List<SqlParameter> parameters)
 					if (paramNameToUse == null) {
 						paramNameToUse = "";
 					}
-					if (meta.getParameterType() == DatabaseMetaData.procedureColumnOut) {
+					if (meta.isOutParameter()) {
 						workParams.add(provider.createDefaultOutParameter(paramNameToUse, meta));
 						outParamNames.add(paramNameToUse);
 						if (logger.isDebugEnabled()) {
 							logger.debug("Added meta-data out parameter for '" + paramNameToUse + "'");
 						}
 					}
-					else if (meta.getParameterType() == DatabaseMetaData.procedureColumnInOut) {
+					else if (meta.isInOutParameter()) {
 						workParams.add(provider.createDefaultInOutParameter(paramNameToUse, meta));
 						outParamNames.add(paramNameToUse);
 						if (logger.isDebugEnabled()) {
@@ -554,7 +553,7 @@ else if (logger.isInfoEnabled()) {
 		Map<String, String> callParameterNames = CollectionUtils.newHashMap(this.callParameters.size());
 		for (SqlParameter parameter : this.callParameters) {
 			if (parameter.isInputValueProvided()) {
-				String parameterName =  parameter.getName();
+				String parameterName = parameter.getName();
 				String parameterNameToMatch = provider.parameterNameToUse(parameterName);
 				if (parameterNameToMatch != null) {
 					callParameterNames.put(parameterNameToMatch.toLowerCase(), parameterName);
@@ -606,7 +605,7 @@ else if (logger.isInfoEnabled()) {
 		int i = 0;
 		for (SqlParameter parameter : this.callParameters) {
 			if (parameter.isInputValueProvided()) {
-				String parameterName =  parameter.getName();
+				String parameterName = parameter.getName();
 				matchedParameters.put(parameterName, parameterValues[i++]);
 			}
 		}

spring-jdbc/src/main/java/org/springframework/jdbc/core/metadata/CallParameterMetaData.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2020 the original author or authors.
+ * Copyright 2002-2023 the original author or authors.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -107,6 +107,28 @@ public boolean isReturnParameter() {
 						this.parameterType == DatabaseMetaData.procedureColumnResult));
 	}
 
+	/**
+	 * Determine whether the declared parameter qualifies as an 'out' parameter
+	 * for our purposes: type {@link DatabaseMetaData#procedureColumnOut},
+	 * or in case of a function, {@link DatabaseMetaData#functionColumnOut}.
+	 * @since 5.3.31
+	 */
+	public boolean isOutParameter() {
+		return (this.function ? this.parameterType == DatabaseMetaData.functionColumnOut :
+				this.parameterType == DatabaseMetaData.procedureColumnOut);
+	}
+
+	/**
+	 * Determine whether the declared parameter qualifies as an 'in-out' parameter
+	 * for our purposes: type {@link DatabaseMetaData#procedureColumnInOut},
+	 * or in case of a function, {@link DatabaseMetaData#functionColumnInOut}.
+	 * @since 5.3.31
+	 */
+	public boolean isInOutParameter() {
+		return (this.function ? this.parameterType == DatabaseMetaData.functionColumnInOut :
+				this.parameterType == DatabaseMetaData.procedureColumnInOut);
+	}
+
 	/**
 	 * Return the parameter SQL type.
 	 */

spring-jdbc/src/main/java/org/springframework/jdbc/core/metadata/GenericCallMetaDataProvider.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2021 the original author or authors.
+ * Copyright 2002-2023 the original author or authors.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -35,7 +35,8 @@
 
 /**
  * A generic implementation of the {@link CallMetaDataProvider} interface.
- * This class can be extended to provide database specific behavior.
+ *
+ * <p>This class can be extended to provide database specific behavior.
  *
  * @author Thomas Risberg
  * @author Juergen Hoeller
@@ -113,7 +114,7 @@ public void initializeWithProcedureColumnMetaData(DatabaseMetaData databaseMetaD
 			@Nullable String schemaName, @Nullable String procedureName) throws SQLException {
 
 		this.procedureColumnMetaDataUsed = true;
-		processProcedureColumns(databaseMetaData, catalogName, schemaName,  procedureName);
+		processProcedureColumns(databaseMetaData, catalogName, schemaName, procedureName);
 	}
 
 	@Override
@@ -124,52 +125,19 @@ public List<CallParameterMetaData> getCallParameterMetaData() {
 	@Override
 	@Nullable
 	public String procedureNameToUse(@Nullable String procedureName) {
-		if (procedureName == null) {
-			return null;
-		}
-		else if (isStoresUpperCaseIdentifiers()) {
-			return procedureName.toUpperCase();
-		}
-		else if (isStoresLowerCaseIdentifiers()) {
-			return procedureName.toLowerCase();
-		}
-		else {
-			return procedureName;
-		}
+		return identifierNameToUse(procedureName);
 	}
 
 	@Override
 	@Nullable
 	public String catalogNameToUse(@Nullable String catalogName) {
-		if (catalogName == null) {
-			return null;
-		}
-		else if (isStoresUpperCaseIdentifiers()) {
-			return catalogName.toUpperCase();
-		}
-		else if (isStoresLowerCaseIdentifiers()) {
-			return catalogName.toLowerCase();
-		}
-		else {
-			return catalogName;
-		}
+		return identifierNameToUse(catalogName);
 	}
 
 	@Override
 	@Nullable
 	public String schemaNameToUse(@Nullable String schemaName) {
-		if (schemaName == null) {
-			return null;
-		}
-		else if (isStoresUpperCaseIdentifiers()) {
-			return schemaName.toUpperCase();
-		}
-		else if (isStoresLowerCaseIdentifiers()) {
-			return schemaName.toLowerCase();
-		}
-		else {
-			return schemaName;
-		}
+		return identifierNameToUse(schemaName);
 	}
 
 	@Override
@@ -197,18 +165,7 @@ public String metaDataSchemaNameToUse(@Nullable String schemaName) {
 	@Override
 	@Nullable
 	public String parameterNameToUse(@Nullable String parameterName) {
-		if (parameterName == null) {
-			return null;
-		}
-		else if (isStoresUpperCaseIdentifiers()) {
-			return parameterName.toUpperCase();
-		}
-		else if (isStoresLowerCaseIdentifiers()) {
-			return parameterName.toLowerCase();
-		}
-		else {
-			return parameterName;
-		}
+		return identifierNameToUse(parameterName);
 	}
 
 	@Override
@@ -316,6 +273,22 @@ protected boolean isStoresLowerCaseIdentifiers() {
 	}
 
 
+	@Nullable
+	private String identifierNameToUse(@Nullable String identifierName) {
+		if (identifierName == null) {
+			return null;
+		}
+		else if (isStoresUpperCaseIdentifiers()) {
+			return identifierName.toUpperCase();
+		}
+		else if (isStoresLowerCaseIdentifiers()) {
+			return identifierName.toLowerCase();
+		}
+		else {
+			return identifierName;
+		}
+	}
+
 	/**
 	 * Process the procedure column meta-data.
 	 */