com.jn.sqlhelper.common.resultset.ResultSetDescription Maven / Gradle / Ivy
package com.jn.sqlhelper.common.resultset;
import com.jn.langx.util.Preconditions;
import com.jn.langx.util.ThrowableFunction;
import com.jn.langx.util.Throwables;
import com.jn.langx.util.collection.Arrs;
import com.jn.langx.util.collection.Collects;
import com.jn.langx.util.function.Consumer;
import com.jn.sqlhelper.common.ddl.model.internal.JdbcType;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import java.sql.ResultSetMetaData;
import java.sql.Types;
import java.util.List;
@SuppressWarnings({"unused"})
public class ResultSetDescription {
private static final Logger logger = LoggerFactory.getLogger(ResultSetDescription.class);
private ResultSetMetaData resultSetMetaData;
public ResultSetDescription(final ResultSetMetaData resultSetMetaData) {
Preconditions.checkNotNull(resultSetMetaData);
this.resultSetMetaData = resultSetMetaData;
getColumnCount();
}
private int columnCount = -1;
public int getColumnCount() {
if (columnCount < 0) {
parseColumnCount();
}
return columnCount;
}
private void parseColumnCount() {
this.columnCount = Throwables.ignoreThrowable(logger, 0, new ThrowableFunction() {
@Override
public Integer doFun(Object o) throws Throwable {
return resultSetMetaData.getColumnCount();
}
}, resultSetMetaData);
}
private List isAutoIncrement;
/**
* Indicates whether the designated column is automatically numbered.
*
* @param column the first column is 1, the second is 2, ...
* @return true if so; false otherwise
*/
public boolean isAutoIncrement(int column) {
if (isAutoIncrement == null) {
parseIsAutoIncrement();
}
return isAutoIncrement.get(column - 1);
}
private void parseIsAutoIncrement() {
final List isAutoIncrement = Collects.emptyArrayList();
Collects.forEach(Arrs.range(1, columnCount + 1), new Consumer() {
@Override
public void accept(Integer column) {
isAutoIncrement.add(Throwables.ignoreThrowable(logger, false, new ThrowableFunction() {
@Override
public Boolean doFun(Integer column) throws Throwable {
return resultSetMetaData.isAutoIncrement(column);
}
}, column));
}
});
this.isAutoIncrement = isAutoIncrement;
}
private List isCaseSensitive;
/**
* Indicates whether a column's case matters.
*
* @param column the first column is 1, the second is 2, ...
* @return true if so; false otherwise
*/
public boolean isCaseSensitive(int column) {
if (isCaseSensitive == null) {
parseIsCaseSensitive();
}
return isCaseSensitive.get(column - 1);
}
private void parseIsCaseSensitive() {
final List isCaseSensitive = Collects.emptyArrayList();
Collects.forEach(Arrs.range(1, columnCount + 1), new Consumer() {
@Override
public void accept(Integer column) {
isCaseSensitive.add(Throwables.ignoreThrowable(logger, false, new ThrowableFunction() {
@Override
public Boolean doFun(Integer column) throws Throwable {
return resultSetMetaData.isCaseSensitive(column);
}
}, column));
}
});
this.isCaseSensitive = isCaseSensitive;
}
private List isSearchable;
/**
* Indicates whether the designated column can be used in a where clause.
*
* @param column the first column is 1, the second is 2, ...
* @return true if so; false otherwise
*/
public boolean isSearchable(int column) {
if (isSearchable == null) {
parseIsCaseSensitive();
}
return isSearchable.get(column - 1);
}
private void parseIsSearchable() {
final List isSearchable = Collects.emptyArrayList();
Collects.forEach(Arrs.range(1, columnCount + 1), new Consumer() {
@Override
public void accept(Integer column) {
isSearchable.add(Throwables.ignoreThrowable(logger, false, new ThrowableFunction() {
@Override
public Boolean doFun(Integer column) throws Throwable {
return resultSetMetaData.isSearchable(column);
}
}, column));
}
});
this.isSearchable = isSearchable;
}
private List isCurrency;
/**
* Indicates whether the designated column is a cash value.
*
* @param column the first column is 1, the second is 2, ...
* @return true if so; false otherwise
*/
public boolean isCurrency(int column) {
if (isCurrency == null) {
parseIsCurrency();
}
return isCurrency.get(column - 1);
}
private void parseIsCurrency() {
final List isCurrency = Collects.emptyArrayList();
Collects.forEach(Arrs.range(1, columnCount + 1), new Consumer() {
@Override
public void accept(Integer column) {
isCurrency.add(Throwables.ignoreThrowable(logger, false, new ThrowableFunction() {
@Override
public Boolean doFun(Integer column) throws Throwable {
return resultSetMetaData.isSearchable(column);
}
}, column));
}
});
this.isCurrency = isCurrency;
}
private List isNullable;
/**
* Indicates the nullability of values in the designated column.
*
* @param column the first column is 1, the second is 2, ...
* @return the nullability status of the given column; one of columnNoNulls,
* columnNullable or columnNullableUnknown
*/
public int isNullable(int column) {
if (isNullable == null) {
parseIsNullable();
}
return isNullable.get(column - 1);
}
private void parseIsNullable() {
final List isNullable = Collects.emptyArrayList();
Collects.forEach(Arrs.range(1, columnCount + 1), new Consumer() {
@Override
public void accept(Integer column) {
isNullable.add(Throwables.ignoreThrowable(logger, columnNullableUnknown, new ThrowableFunction() {
@Override
public Integer doFun(Integer column) throws Throwable {
return resultSetMetaData.isNullable(column);
}
}, column));
}
});
this.isNullable = isNullable;
}
/**
* The constant indicating that a
* column does not allow NULL values.
*/
public static final int columnNoNulls = 0;
/**
* The constant indicating that a
* column allows NULL values.
*/
int columnNullable = 1;
/**
* The constant indicating that the
* nullability of a column's values is unknown.
*/
public static final int columnNullableUnknown = 2;
private List isSigned;
/**
* Indicates whether values in the designated column are signed numbers.
*
* @param column the first column is 1, the second is 2, ...
* @return true if so; false otherwise
*/
public boolean isSigned(int column) {
if (isSigned == null) {
parseIsSigned();
}
return isSigned.get(column - 1);
}
private void parseIsSigned() {
final List isSigned = Collects.emptyArrayList();
Collects.forEach(Arrs.range(1, columnCount + 1), new Consumer() {
@Override
public void accept(Integer column) {
isSigned.add(Throwables.ignoreThrowable(logger, false, new ThrowableFunction() {
@Override
public Boolean doFun(Integer column) throws Throwable {
return resultSetMetaData.isSigned(column);
}
}, column));
}
});
this.isSigned = isSigned;
}
private List columnDisplaySizes;
/**
* Indicates the designated column's normal maximum width in characters.
*
* @param column the first column is 1, the second is 2, ...
* @return the normal maximum number of characters allowed as the width
* of the designated column
*/
public int getColumnDisplaySize(int column) {
if (columnDisplaySizes == null) {
parseColumnDisplaySizes();
}
return columnDisplaySizes.get(column - 1);
}
private void parseColumnDisplaySizes() {
final List columnDisplaySizes = Collects.emptyArrayList();
Collects.forEach(Arrs.range(1, columnCount + 1), new Consumer() {
@Override
public void accept(Integer column) {
columnDisplaySizes.add(Throwables.ignoreThrowable(logger, columnNullableUnknown, new ThrowableFunction() {
@Override
public Integer doFun(Integer column) throws Throwable {
return resultSetMetaData.getColumnDisplaySize(column);
}
}, column));
}
});
this.columnDisplaySizes = columnDisplaySizes;
}
private List columnLabels;
/**
* Gets the designated column's suggested title for use in printouts and
* displays. The suggested title is usually specified by the SQL AS
* clause. If a SQL AS is not specified, the value returned from
* getColumnLabel will be the same as the value returned by the
* getColumnName method.
*
* @param column the first column is 1, the second is 2, ...
* @return the suggested column title
*/
public String getColumnLabel(int column) {
if (columnLabels == null) {
parseColumnLabels();
}
return columnLabels.get(column - 1);
}
private void parseColumnLabels() {
final List columnLabels = Collects.emptyArrayList();
Collects.forEach(Arrs.range(1, columnCount + 1), new Consumer() {
@Override
public void accept(Integer column) {
columnLabels.add(Throwables.ignoreThrowable(logger, getColumnName(column), new ThrowableFunction() {
@Override
public String doFun(Integer column) throws Throwable {
return resultSetMetaData.getColumnLabel(column);
}
}, column));
}
});
this.columnLabels = columnLabels;
}
private List columnNames;
/**
* Get the designated column's name.
*
* @param column the first column is 1, the second is 2, ...
* @return column name
*/
public String getColumnName(int column) {
if (columnNames == null) {
parseColumnNames();
}
return columnNames.get(column - 1);
}
private void parseColumnNames() {
final List columnNames = Collects.emptyArrayList();
Collects.forEach(Arrs.range(1, columnCount + 1), new Consumer() {
@Override
public void accept(Integer column) {
columnNames.add(Throwables.ignoreThrowable(logger, "_UNKnown_", new ThrowableFunction() {
@Override
public String doFun(Integer column) throws Throwable {
return resultSetMetaData.getColumnName(column);
}
}, column));
}
});
this.columnNames = columnNames;
}
public List getColumnNames() {
return columnNames;
}
private List schemaNames;
/**
* Get the designated column's table's schema.
*
* @param column the first column is 1, the second is 2, ...
* @return schema name or "" if not applicable
*/
public String getSchemaName(int column) {
if (schemaNames == null) {
parseSchemaNames();
}
return schemaNames.get(column - 1);
}
private void parseSchemaNames() {
final List schemaNames = Collects.emptyArrayList();
Collects.forEach(Arrs.range(1, columnCount + 1), new Consumer() {
@Override
public void accept(Integer column) {
schemaNames.add(Throwables.ignoreThrowable(logger, "", new ThrowableFunction() {
@Override
public String doFun(Integer column) throws Throwable {
return resultSetMetaData.getSchemaName(column);
}
}, column));
}
});
this.schemaNames = schemaNames;
}
private List precisions;
/**
* Get the designated column's specified column size.
* For numeric data, this is the maximum precision. For character data, this is the length in characters.
* For datetime datatypes, this is the length in characters of the String representation (assuming the
* maximum allowed precision of the fractional seconds component). For binary data, this is the length in bytes. For the ROWID datatype,
* this is the length in bytes. 0 is returned for data types where the
* column size is not applicable.
*
* @param column the first column is 1, the second is 2, ...
* @return precision
*/
public int getPrecision(int column) {
if (precisions == null) {
parsePrecisions();
}
return precisions.get(column - 1);
}
private void parsePrecisions() {
final List precisions = Collects.emptyArrayList();
Collects.forEach(Arrs.range(1, columnCount + 1), new Consumer() {
@Override
public void accept(Integer column) {
precisions.add(Throwables.ignoreThrowable(logger, 0, new ThrowableFunction() {
@Override
public Integer doFun(Integer column) throws Throwable {
return resultSetMetaData.getPrecision(column);
}
}, column));
}
});
this.precisions = precisions;
}
private List scales;
/**
* Gets the designated column's number of digits to right of the decimal point.
* 0 is returned for data types where the scale is not applicable.
*
* @param column the first column is 1, the second is 2, ...
* @return scale
*/
public int getScale(int column) {
if (scales == null) {
parseScales();
}
return scales.get(column - 1);
}
private void parseScales() {
final List scales = Collects.emptyArrayList();
Collects.forEach(Arrs.range(1, columnCount + 1), new Consumer() {
@Override
public void accept(Integer column) {
scales.add(Throwables.ignoreThrowable(logger, 0, new ThrowableFunction() {
@Override
public Integer doFun(Integer column) throws Throwable {
return resultSetMetaData.getScale(column);
}
}, column));
}
});
this.scales = scales;
}
private List tableNames;
/**
* Gets the designated column's table name.
*
* @param column the first column is 1, the second is 2, ...
* @return table name or "" if not applicable
*/
public String getTableName(int column) {
if (tableNames == null) {
parseTableNames();
}
return tableNames.get(column - 1);
}
private void parseTableNames() {
final List tableNames = Collects.emptyArrayList();
Collects.forEach(Arrs.range(1, columnCount + 1), new Consumer() {
@Override
public void accept(Integer column) {
tableNames.add(Throwables.ignoreThrowable(logger, "", new ThrowableFunction() {
@Override
public String doFun(Integer column) throws Throwable {
return resultSetMetaData.getTableName(column);
}
}, column));
}
});
this.tableNames = tableNames;
}
private List catalogNames;
/**
* Gets the designated column's table's catalog name.
*
* @param column the first column is 1, the second is 2, ...
* @return the name of the catalog for the table in which the given column
* appears or "" if not applicable
*/
public String getCatalogName(int column) {
if (catalogNames == null) {
parseCatalogNames();
}
return catalogNames.get(column - 1);
}
private void parseCatalogNames() {
final List catalogNames = Collects.emptyArrayList();
Collects.forEach(Arrs.range(1, columnCount + 1), new Consumer() {
@Override
public void accept(Integer column) {
catalogNames.add(Throwables.ignoreThrowable(logger, "", new ThrowableFunction() {
@Override
public String doFun(Integer column) throws Throwable {
return resultSetMetaData.getCatalogName(column);
}
}, column));
}
});
this.catalogNames = catalogNames;
}
private List jdbcTypes;
private void parseColumnTypes() {
final List jdbcTypes = Collects.emptyArrayList();
Collects.forEach(Arrs.range(1, columnCount + 1), new Consumer() {
@Override
public void accept(Integer column) {
jdbcTypes.add(Throwables.ignoreThrowable(logger, JdbcType.UNKNOWN, new ThrowableFunction() {
@Override
public JdbcType doFun(Integer column) throws Throwable {
return JdbcType.ofCode(resultSetMetaData.getColumnType(column));
}
}, column));
}
});
this.jdbcTypes = jdbcTypes;
}
/**
* Retrieves the designated column's SQL type.
*
* @param column the first column is 1, the second is 2, ...
* @return SQL type from java.sql.Types
* @see Types
*/
public JdbcType getColumnType(int column) {
if (jdbcTypes == null) {
parseColumnTypes();
}
return jdbcTypes.get(column - 1);
}
private List columnJdbcTypeNames;
/**
* Retrieves the designated column's database-specific type name.
*
* @param column the first column is 1, the second is 2, ...
* @return type name used by the database. If the column type is
* a user-defined type, then a fully-qualified type name is returned.
*/
public String getColumnTypeName(int column) {
if (columnJdbcTypeNames == null) {
parseColumnJdbcTypeNames();
}
return columnJdbcTypeNames.get(column - 1);
}
private void parseColumnJdbcTypeNames() {
final List columnJdbcTypeNames = Collects.emptyArrayList();
Collects.forEach(Arrs.range(1, columnCount + 1), new Consumer() {
@Override
public void accept(Integer column) {
columnJdbcTypeNames.add(Throwables.ignoreThrowable(logger, "", new ThrowableFunction() {
@Override
public String doFun(Integer column) throws Throwable {
return resultSetMetaData.getColumnTypeName(column);
}
}, column));
}
});
this.columnJdbcTypeNames = columnJdbcTypeNames;
}
private List isReadOnly;
/**
* Indicates whether the designated column is definitely not writable.
*
* @param column the first column is 1, the second is 2, ...
* @return true if so; false otherwise
*/
public boolean isReadOnly(int column) {
if (isReadOnly == null) {
parseIsReadOnly();
}
return isReadOnly.get(column - 1);
}
private void parseIsReadOnly() {
final List isReadOnly = Collects.emptyArrayList();
Collects.forEach(Arrs.range(1, columnCount + 1), new Consumer() {
@Override
public void accept(Integer column) {
isReadOnly.add(Throwables.ignoreThrowable(logger, true, new ThrowableFunction() {
@Override
public Boolean doFun(Integer column) throws Throwable {
return resultSetMetaData.isReadOnly(column);
}
}, column));
}
});
this.isReadOnly = isReadOnly;
}
private List isWritable;
/**
* Indicates whether it is possible for a write on the designated column to succeed.
*
* @param column the first column is 1, the second is 2, ...
* @return true if so; false otherwise
*/
public boolean isWritable(int column) {
if (isWritable == null) {
parseIsWritable();
}
return isWritable.get(column - 1);
}
private void parseIsWritable() {
final List isWritable = Collects.emptyArrayList();
Collects.forEach(Arrs.range(1, columnCount + 1), new Consumer() {
@Override
public void accept(Integer column) {
isWritable.add(Throwables.ignoreThrowable(logger, false, new ThrowableFunction() {
@Override
public Boolean doFun(Integer column) throws Throwable {
return resultSetMetaData.isWritable(column);
}
}, column));
}
});
this.isWritable = isWritable;
}
private List isDefinitelyWritable;
/**
* Indicates whether a write on the designated column will definitely succeed.
*
* @param column the first column is 1, the second is 2, ...
* @return true if so; false otherwise
*/
public boolean isDefinitelyWritable(int column) {
if (isDefinitelyWritable == null) {
parseIsDefinitelyWritable();
}
return isDefinitelyWritable.get(column - 1);
}
private void parseIsDefinitelyWritable() {
final List isDefinitelyWritable = Collects.emptyArrayList();
Collects.forEach(Arrs.range(1, columnCount + 1), new Consumer() {
@Override
public void accept(Integer column) {
isDefinitelyWritable.add(Throwables.ignoreThrowable(logger, false, new ThrowableFunction() {
@Override
public Boolean doFun(Integer column) throws Throwable {
return resultSetMetaData.isDefinitelyWritable(column);
}
}, column));
}
});
this.isDefinitelyWritable = isDefinitelyWritable;
}
private List columnClassNames;
/**
* Returns the fully-qualified name of the Java class whose instances
* are manufactured if the method ResultSet.getObject
* is called to retrieve a value
* from the column. ResultSet.getObject may return a subclass of the
* class returned by this method.
*
* @param column the first column is 1, the second is 2, ...
* @return the fully-qualified name of the class in the Java programming
* language that would be used by the method
* ResultSet.getObject to retrieve the value in the specified
* column. This is the class name used for custom mapping.
*/
public String getColumnClassName(int column) {
if (columnClassNames == null) {
parseColumnClassNames();
}
return columnClassNames.get(column - 1);
}
private void parseColumnClassNames() {
final List columnClassNames = Collects.emptyArrayList();
Collects.forEach(Arrs.range(1, columnCount + 1), new Consumer() {
@Override
public void accept(Integer column) {
columnClassNames.add(Throwables.ignoreThrowable(logger, "", new ThrowableFunction() {
@Override
public String doFun(Integer column) throws Throwable {
return resultSetMetaData.getColumnClassName(column);
}
}, column));
}
});
this.columnClassNames = columnClassNames;
}
}
© 2015 - 2025 Weber Informatics LLC | Privacy Policy