spring CallParameterMetaData 源码
spring CallParameterMetaData 代码
文件路径：/spring-jdbc/src/main/java/org/springframework/jdbc/core/metadata/CallParameterMetaData.java
/*
* Copyright 2002-2021 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.
* You may obtain a copy of the License at
*
* https://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.springframework.jdbc.core.metadata;
import java.sql.DatabaseMetaData;
import org.springframework.lang.Nullable;
/**
* Holder of meta-data for a specific parameter that is used for call processing.
*
* @author Thomas Risberg
* @author Juergen Hoeller
* @since 2.5
* @see GenericCallMetaDataProvider
*/
public class CallParameterMetaData {
private final boolean function;
@Nullable
private final String parameterName;
private final int parameterType;
private final int sqlType;
@Nullable
private final String typeName;
private final boolean nullable;
/**
* Constructor taking all the properties including the function marker.
* @since 5.2.9
*/
public CallParameterMetaData(boolean function, @Nullable String columnName, int columnType,
int sqlType, @Nullable String typeName, boolean nullable) {
this.function = function;
this.parameterName = columnName;
this.parameterType = columnType;
this.sqlType = sqlType;
this.typeName = typeName;
this.nullable = nullable;
}
/**
* Return whether this parameter is declared in a function.
* @since 5.2.9
*/
public boolean isFunction() {
return this.function;
}
/**
* Return the parameter name.
*/
@Nullable
public String getParameterName() {
return this.parameterName;
}
/**
* Return the parameter type.
*/
public int getParameterType() {
return this.parameterType;
}
/**
* Determine whether the declared parameter qualifies as a 'return' parameter
* for our purposes: type {@link DatabaseMetaData#procedureColumnReturn} or
* {@link DatabaseMetaData#procedureColumnResult}, or in case of a function,
* {@link DatabaseMetaData#functionReturn}.
* @since 4.3.15
*/
public boolean isReturnParameter() {
return (this.function ? this.parameterType == DatabaseMetaData.functionReturn :
(this.parameterType == DatabaseMetaData.procedureColumnReturn ||
this.parameterType == DatabaseMetaData.procedureColumnResult));
}
/**
* Return the parameter SQL type.
*/
public int getSqlType() {
return this.sqlType;
}
/**
* Return the parameter type name.
*/
@Nullable
public String getTypeName() {
return this.typeName;
}
/**
* Return whether the parameter is nullable.
*/
public boolean isNullable() {
return this.nullable;
}
}
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